The stabilizer is what I got for my saw. The back earing faces the back of the blade... Works great with 1/8" to 1/4" blades.
I have a Rigid 14" BS. It came with guides that has blocks for side guides, but the back is a bearing at right angle to the back of the blade. So the back of the blade scuffs the edge of that bearing (as a normal position0. I don't like how that works. It takes a bit to get those blocks dialed in after changing blades. (PITA)
Carters guides are two bearings on each side facing the blade sides... then the back bearing edge faces the blade (not perpendicular as mine is). I think that is a lot better design than mine is. The adjustments for those bearing in their guides are sturdy and look like they would be easy to adjust and keep their adjustment.
So on a normal BS, the guides would be 3 bearings on top. 3 on bottom. Using Carter's. it would be 5 on top, 5 on bottom. I think that would be great for me for 3/8" to 3/4" blades.
EDIT-- Then again, I really don't use that bandsaw as much as I thought I would. It's handy to have around... but I really thought I'd have more use for it. It's there when I do need it.