I don't have any Isoloc templates.
But I have the VRS.
As a dust collector , it works , up to a point. It doesn't offer a completely dust /chip free environment but its sure better than nothing. The mechanism for synchronising the movement of the router and vacuum hose is not as elegant as the engineering of the rest of the jig . Overall 6/10 for this part of its function
As a support platform its very good, provided time is spent on the setup so that its level with whatever template is fitted to the jig. 9/10 for this part of the VRS' function