I carry my Series 70 Gov't Model in an old Bianchi Shadow. It looks very similar to your holster. The strap between the hammer and frame do make it a little safer. It took me quite a while just to get used to it being in Condition 1. Hopefully I will never be 100% comforable with it. I feel the more comfortable you are the more likely you are to become complacent and have an accident. I don't want to become complacent. I know others will say hogwash but anything that helps you keep from having an accident the better. Train with it til it becomes second nature. Train with it unloaded until you feel somewhat comfortable. I have been carrying professionally since Dec. 1978. I started with revolvers and now I mostly carry semi-autos. Choose the holster that you feel good about. Remember the trinity of firing, thumb safety off, grip safety on, pull trigger; if one is missing it will not fire. That is unless there is a worn safety, and they are reletively easy to fix.