Last I checked the IDPA won't allow the roto version of these holsters. Having said that, I got one before I knew. I compete at the local level and no one says a thing. Maybe if I started winning consistently....
When I go to the nat's I'll have to change. But that gives me .... oh about a thousand years to find a replacement
I like mine, if anything it's too tight.
You can loosen one up with heat, but ummmm, if you do it intentionally you'll get in trouble with the IDPA. If you accidently leave it in your car on a hot summer day (and whos to say if it was a car or a hair drier) it'd be ok. The heat relaxes the Kydex, so go slow, errr I mean don't leave it in the car ALL day:

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I've also heard of people coating them to make them slicker/faster. Might help with the wear on the pistol? I don't know what they use, might have been a teflon based spray.
HTH