You say that you carry your 1911 in condition 2 because the holsters you use don't seem to like the safety on your Sig 1911. I've been carrying a Sig 1911 ever since they first came out back around 2000. I primarily carry mine in a a Yaqui slide holster which does not hinder the safety in any way. At times, I also carry it in a shoulder holster. I use one made of ballistic nylon from Uncle Mike's and have never had an issue concerning the safety. I think if you would try some different holsters, you'd be able to carry that fine 1911 you have in a much safer and much more ready manner. You did not mention how you cock the hammer when you draw your 1911. Cocking the hammer is just as hard as lowering the hammer with one hand on the 1911. I think it is safe to say that none of us want to ever have to draw and fire our firearms in a self defense scenario, but there is always the possibility. That possibility is why we carry a handgun. You also mentioned that you don't think a split second will count in one of these scenarios, but having lived through one, I can attest to the fact that a split second can make the difference in life or death.... yours. I don't know about your Browning High Power. I had one years ago and loved it, but I never carried it for defense. Unfortunately I sold a long time ago and have kicked myself in the butt ever since. I do have one of the clones on order and can't wait for its arrival. Take care out there my friend and be safe.
I cock the 1911's (all of them) with my left thumb when I grip the pistol with my left hand over the right hand. I lower the hammer in the same manner with the thumb blocking the hammer fall. I am fully aware that the prescribed method is to use the safety for Condition One.
I use the safety if I want to stop shooting before emptying the magazine.
In order to perfect a "fast draw", I would need to do a lot of with range time. No range exists in my area to do firing from a holster. It is getting very difficult to even find a place in the boonies to do so. No, I do not live in California. I am not that concerned with encountering a threat that would require me to draw and fire in a "split second". I understand fully what you say about a "life and death" situation, but that is more likely to happen in my case at home, and for that I keep a 12 gauge shotgun available. NOTHING beats that gun. Honestly, I carry the guns because it is better to have one that not have it. I am not ex law enforcement or military, but I did get the WWI 1918 1911 I have 64 years ago at the age of 11. As I related, I have three others.
I have numerous holsters for the 1911's with some being military type full flap I used to use in the field to protect the gun. The shoulder holsters I use are made by Falco in Slovakia, and I find them to be outstanding. I also have shoulder holsters for two .357 revolvers I use in the field. Belt holsters do not work well for me anymore due to my back, hips, etc.
Nearly all these forums I read are predominately used by those that approach CC much more seriously than I do. The list of threats out to get me in today's world is so long that I can never protect myself from most of them. I just do my best.
In conclusion, I will say that I do prefer a single action pistol, but I also use a Sig Sauer P239 in .357. This of course is DA/SA and the concern over a "cocked and locked" does not exist. In the boonies hiking, etc. it is my 12 gauge Benelli or a .44 Mag or .357. For accuracy and range, I have never found a semi auto pistol to equal them.
I know I am in a minority using a 1911 in Condition 2, but I am confident that is the best practice for me.