I bought the Pachmayr grip from eBay, and put it on today. It went on super easy, just a little stretching and pulling. I didn't use anything (soap, Windex, etc) to help put it on...it wasn't needed. This grip feels amazing in my hand...I was a little concerned before I got it, thinking it might be a little too big. I put a Pachmayr grip on my wife's LC9, and it made a world of difference in the way it feels, adding just the right amount of thickness...I didn't want the grip to be too thick on the SD9VE. I was very pleasantly surprised once I got it on...it feels great, soft and just tacky enough to give a secure grip, cushioned, and not at all too big.
I haven't shot the gun with the grip on it yet, so I don't know if it will move with recoil...I was able to twist it fairly easily to line it up once I got it on, so I'll see how it handles in live fire. For now, though, I'm very well pleased!