What gun do you use as a carry or HD gun?
This is just my personal opinion, but IDPA is well suited to be shot with your EDC gun. It’s a good way to get some trigger time and practice with your “real world” gun and gear, sort out what works, what doesn’t, and address any deficiencies. It’s the next best option to taking a class from a trainer, but more often and at a lower cost. Most of what I see at my local IDPA match is people using full size duty guns, OWB holsters, and a vest they only wear on match day. A few of them may actually carry that gun on a regular basis, but I doubt the majority do.
When I shoot IDPA I shoot my Sig 365XL which is my EDC gun or my P10C which is my bedside gun. If IDPA would allow it, I’d be using an AIWB holster, but they are not there yet.