The "Special Ops Pro" style ( it's the best choice for Apendix, it also can be used for Strong side carry and adjustable.) 1911's and 2011's are 225.00 and up depending on firearm and Accessories +18.00 for shipping and insurance. With belt loops, it can be used outside the pants inside the belt for OWB.  Add Quick Clips for fast on and off. No belt needed.  
"Special Ops Pro"  AIWB HOLSTER DESIGN REVIEW.