Don't let the mag release stop you from getting this AWESOME carry gun.
I think I use my trigger, but could be my middle... (it happens fast and is kinda instinctual now) To be honest, the first time I shoot my PPS (in a given range session) I sometimes reach my thumb for a release like on my Sig's, but then immediately realize it isn't there and drop the mag with my strong hand finger. If it take me 1/2 second total I'd be surprised. Once you shoot the PPS a decent bit it becomes instinctive, and even if you switch platforms (like I do), it won't cost you any time if it comes to a life/death situation. Might add 1/10th of a second to your reload
Overall the paddle release is just a quick as thumb, and may even be a little quicker.
I think it is my middle finger I use, I'll have to pay attention next time I get to the range...