Nope, never
But my carry gun (on those increasingly rare occasions that I do carry) is a Browning BDA .45 (early model Sig P220 with the heel type mag release).
The biggest drawback to ambidextrous mag releases, safeties, extended slide stops, etc. is that the bells and whistles made popular in competition can snag, hang up, get accidentally activated, etc. in the real world when you take them off the range. Good holster design minimizes the problem, but it is hard to eliminate completely.
I got away from playing games against the guys with Colts back when all I had was the Browning, because reloads were slower, and part of the scoring was time. I particularly disliked the matches where you would shoot 2 or 4, and then a mandatory reload. To each his own, I'm not knocking the competition shooters, just that everything they do (and have guns tricked out for) doesn't appeal to me.
I used to dislike the heel type mag release, but as I got older I realized, I'm not a LEO, I'm too old, fat and lazy to play the games, and the design does have some real world advantages, at least to someone with my lifestyle. I still prefer the Colt style pushbutton mag catch, but I carry the BDA and don't feel disadvantaged. If I actually ever have to use it, I think it will serve quite well if I do my part.