I like the Kimber, it's been very reliable. I use it when I am wearing a lighter jacket, like a sport coat as it prints less than the RAMI.
I have an OWB Model 1 pancake from Lobo Gun Leathers; Ray recently retired and sold the business to another family that's making the same models IIRC (lobogunleathers.com is the new site).
I generally carry 2 extra mags with me. If I can't get the job done in 3 mags, I've got bigger problems.