(My disclaimer-- if there is something I say in the following post that you don't understand or want to know more about, just ask me. I wanted to cover many things, so summarized many parts.)
I love my panel saw. Well worth it for me when I migrated from a cabinet saw to my panel saw.
I have the Incra system for router and also use it as a parallel fence on my sliding table on the panel saw...
Having said that, and being in the trades... I feel compelled to throw out a few observations on this. Some of the adages of this forum from years past still hold true today. When the founders of the Router Workshop had their TV Series, they held to the concept that it was hard to beat simple, for speed and flexibility.
I have my Incra System, and for the router, use it rarely. On the router, it is great for repeat-ability and dialing in something for accuracy. (dovetails, finger joints, box joints, spline joints, etc.) On other things, hard to beat a simple fence with quick-clamps.
On my panel saw, I use my Incra System even less often.
Sometimes having something with dial-in accuracy tends to lead the user to chase down the numbers, instead of just doing what needs to be done. I know I have been doing this a awhile and have an eye for some things. My apprentices know not to do some of the things that I just eyeball or free-hand cut. It takes practice and a bit of confidence in what you are doing.
But when you need the accuracy... it is available. For me, a good, sturdy rip fence that it easy to move, set and lock-down. Albiet, my panel saw is over 1300 pounds. My rip fence is maybe 50 pounds. But unlocked, I can move it (glides) with my pinky. It locks solidly. It adjusts various ways, for various cuts and applications. I know where zero is (and can trust that). It has a micro-adjust. If you look at my older threads on my Rockwell, it had a Bies type rip fence that I fabricated. Had pretty much the same features (in basic functionality).
But, as I've said many times here, most of my TS cuts (about 80-90 percent) are not with the rip fence. Most my cuts with my cabinet saws and with this panel saw, are and were cross-cut fences and sleds.
I like having about 53" of table to the right of the blade. I love my sliding table, and now wonder how I lived without it before!!! I have 2, 4, 6 and 8 foot crosscut fences. I don't mount my outrigger table unless I need it. I have a miter table attachment, as well as having the same type of positive stop miter fixtures on my outrigger table.
My accessory support table, I drilled to mount my Incra System (router) as a parallel fence. I have another parallel fence that mounts in that same holes, that is faster, but does not incrementally accurate (I measure and set). With all the accessories mounted to my panel saw, it takes up a lot of real estate. More working room around it-- to use it, and to work around it. Space in my shop is premium and I have to reclaim it when needed. (if my shop was just 5 feet wider... lol)
I had been planning to drill out my outfeed table for another table mounted router... but I already have 3 router tables. And I remembered that the one I had on the Rockwell, was mostly in the way. (Hardly used it // used the other router tables instead.)
For me, I need things to be adaptable and flexible. That way I can do many things, as the need arises. I plan my workflow and adapt my tooling to that flow. This leads me into a fixed TS fence system such as the Incra TS... I looked into using it on my and opted out. For me, if mounted permanently, would have held me back, and I would have lost some of my adaptability.
Pick your battles. Work smartly. Research what you want to do and what you need to do. Invest your money wisely were you think it will make a difference. My saw was about $6k retail. I've got about another 6k in extra attachments and such. Took a lifetime of saving for me. I think it is worth it for me. But even then, it has not paid for itself yet. That is not practical nor wise for others.
I still have my jobsite and cabinet TS'es. Not like I couldn't do something without the panel saw, but having good tooling saves so much work and is such a pleasure to use. It takes less work and time getting something to from bulk stock, to finish grade and finished dimensions.
As for an Incra System- A number of users who buy, end up reselling it. They don't seem to learn to use it, or don't use it to it's capabilities. That seems to be why there are so many, from time to time on CL. It's a personal choice, that you really need to invest your time on to learn how to use it.
That goes for any tooling. Learn to use it,. Practice. Learn it inside and out. Learn the possibilities of what you do with what you have. If you can't do something, figure out a way that you can.