ok guys, i guess i already almost know my answer but figured i would ask anyway. here is my dilemma. im going to be joining a private club. its got an idpa setup that can be shot 7 days a week as long as your a member. and its 20 min. from my house. so im going to join. im planning on shooting a lot more. im going to start reloading but financially it will be about a year or two. so instead of not shooting, i want to buy a 9mm so i can shoot for cheap. now that aside. right now all my pistols are TDA. sig220, and hk uspc. basically i dont want to start training in a gun configuration i might not carry. example. "single action" glock /1911 vs. double/tda sigs/hk's. cause eventually i want to be almost exclusively 1911's, so ive pretty much decided on the g17. the "same" trigger manipulation in my mind. am i wrong in thinking its a big transition in training with one kind and possibly carrying another??