Hi R9SCarry,
I use a Ruger MKII with the European style magazine release a heck of a lot and I think that will help me with the Rohrbaugh. To be honest though, when I get my Rohrbaugh, hopefully today or next week sometime, I will probably play with it constantly until all of it's functions, including a magazine change, are second nature. When I am carrying a gun, especially a brand new favorite, I tend to play with it and shoot it a lot so that using it there is no hesitation, fumbling or conscious thought involved.
Frank