I currently have 1911's in 7 calibers, mostly FS Rock Island Ultra guns. 45, 10mm, .40, 38 Super, 9mm, 22 TCM, and 22lr
Mostly just because. The .40 is much nicer shooting out of a steel framed gun compared to my Sig Sauer polymer gun.
Have 4 High Capacity 1911/2011, all in 9mm as well.