I don't have one installed. I just use the 10/15 oils combo with stock or Progressive springs. But that's not because I think it's best; it's merely good enough. A local guy recently installed the Wirth springs with the 10/15 and just loves it.
As for the GV, I'm just describing how the forks and the GV work. You can modify either as you see fit! One thing I definitely would not do is disable the stock anti-bottoming feature of the fork legs. If you disable anything, make sure you do it in such a way that you retain the anti-bottoming. Hopefully my page explains enough that you can see how that works.
Yes, removing the valve from the right leg would reduce rebound damping. I guess I put that in there thinking that people were basically redesigning the fork anyway and would deal with that in their own way. You could put rebound internals in both legs and take it from there, if you don't like the stock compression damping.