I worked for the good part of an hour installing this grip. It is very hard to install and if you don't have very strong hands I cannot with a good conscience recommend it! Heating it or using a lubricant did not make it any easier!
The Desantis ankle holster is of high quality and holds my Sig P938 securely to the ankle with no movement at all. The quick release snap works well too. I highly recommend it for carrying a backup handgun.