TexasCHLforum.com

TxD, as always, is spot on. In the IDPA rules, Appendix 1, C.2.B. specifically states that holsters "must be worn on a standard belt of no more than 1 3/4" width that must pass through the belt loops of the shooter's pants."

Something I didn't highlight--but probably should have--in my post in another Topic about the new July 6 Rule Addendum issued by the IDPA, concerns holsters with retention devices:

IDPA Rule Addendum wrote:If there are retention devices on the holster they must be used. You may not temporarily disable the retention devices for the purpose of shooting a match. Holsters may be permanently modified.

Doesn't matter much to folks who use something like a Blackhawk Serpa, but any holster with a thumb-break, for example, must employ the break. Sounds like you can take a razor blade and slice off the thumb-break if you want, but if it's there it has to be secured at all times until drawing the gun.