Our IPSC club and IDPA club are one and the same. I am one of the few guys who doesn't shoot what I carry. In IDPA I shoot a Baer Premier II but I carry an Ultra Light Springfield V-10.
IDPA won't allow me to shoot my V-10 because of the porting but I can shoot my limited 10 IPSC pistol. Wierd ain't it? Starting next month I am going to shoot my carry gun, I just won't be part of the "sanctioned" match.