Yeah, that's what I mean- I'm so used to having the mag release there that I'm too lazy to train on having it in a different place.
I had a P99 and got rid of it. In terms of dependability it was OK, but it had a bump on the bottom inside of the trigger guard that would abrade my trigger finger after 50 rounds. Also the toggle type mag release was a problem. I found myself trying to release a 1911 mag by pushing down on the trigger guard, thinking "This could be embarassing." I'd go with the SIG.