That is exactly what I use, just with a different glove.
It is super fast. Once you practice enough, it'll only take add one or 2 seconds to your mag changes. But it does require your eyes, something that a regular mag release doesn't.
Assumption is the mother of all ****ups.
Know what you know, Know what you don't know. -Paul Pedzolt
"Jack of all trades, master of none, though oftentimes better than master of one" -Mynshul