I use a compressor with NDMC grips. I use a ball pump needle in a hand trigger gun you can get at most hardware stores. I insert the into the hole in the grip with the pressure set at ~30 psig. Then I trigger the gun and push the grip on. Really easy.
That being said. I just ordered the Pure Grip gun and a couple of grips to try. I will try the gun with a NDMC grip. I'm sure it will work.
I've used the gun + inflator tip to blow on about 10 different types of grips, and it's worked fine on all of them other than a super stroke. I went back to tape and solvent though because they were slipping. Got a set of pures the other day though, so will probably give it another go.