Of all my pistols and revolvers, my Model 10 Smith feels the best. It also shoots the best for me. I have seen the Model 64 and I think it's time to find one. I really feel the k frame platform is the best for my hands and it points natural for me. Currently, I carry the Glock 21 OWB. I think I want to switch to the revolver. What is a good IWB holster for a 4 inch Model 10 bull barrel? Thanks.