Scott P has made me a IWB holster for my .45, which I bought off of him also, and a rifle sling with my initials on it.
His work is second to none and his prices are fantastic for a Canadian leathersmith. I would highly recommend his holsters for IDPA, and any other leather project you would like made.
I've used leather holsters for 26 years as a Police Officer, IPSC, and IDPA. Scott's are some of the best I've seen or used!