I carry in a Southern Comfort IWB holster on either a bianchi or 511 belt (depending on the pants) and carry a full size magazine (a la 17/34) in either my weak hand pants pocket or in a mag carrier on my belt.
Interestingly, I had carried 1911's for several years. I had never shot a glock, nor had I any desire to. When I took my CHL course, I shot my full size 1911 which I had had for a few years. The next week I went to a first steps course with the wife. The instructor handed out Glock 19's for the class. However, he gave me a Glock 26 to use for the class as he ran out of the 19's and knew I was more experienced than anyone in the class (it was a first steps class
