I used my Serpa for my issued SIG 220/226 on assignments where I was among crowds. The additional security provided by the holster along with it's smooth/natural release gave me some additional peace of mind. The Serpa really comes into it's own when riding a snowmobile or ATVSo I asked them; "What should I use for my 1911 that's better?" And on their advice I tried a Sarariland ALS and GLS. Neither of them will lock onto the gun reliably. I decided to use it and ignore them
I tried the ALS with a 1911 and the motion required to release the pistol is just unnatural. What I found that works much better is the Safariland SLS (hooded) holsters.
I chose the SLS for my duty rig as I found it faster and the gun was easily secured if I needed to re-holster when going hands-on