Commygun,
I recommend against "cocked & locked", unless you are very familiar with it. If you are a competitive shooter who uses a 1911 every weekend, great, otherwise stick with something that is safer.
It is far too easy to forget and stick your hand in your pocket and move the gun around. On a GLOCK, it does not matter, if the gun is "cocked & locked", it could cause you a problem when you draw the gun out either to use it or when you are home and putting it away.
Off duty, I usually carry a GLOCK 42. It is reliable, light, accurate, easy to control and will not rust (an important consideration when pocket carrying).
I used to carry a WALTHER PPK and sometimes, a BERETTA 3032 Tomcat. Both are good guns for pocket carry, but the GLOCK is lighter than the PPK and is a .380ACP instead of a .32ACP.
I tried a SIG 232 (a wonderful gun to shoot) and found it too big for pocket carry.
I have also owned a COLT .380 Government model and it was a very easy and accurate gun to shoot, but the "cocked & locked" method is unsafe, in my opinion and I sold the gun.
I pocket carry with a GALCO or De SANTIS pocket holster and have never had any problems with either the GLOCK, WALTHER or BERETTA. I did the same when I carried a .38 Special revolver and my Than RYBKA holster worked fine.
I do not want a gun that may fire if the safety slips off. I only carry "safe action" or double action pistols and prefer 'double action only' when I can (I was issued double action only semi auto pistols for 23 years and I am very happy with them).
If you decide to go "cocked & locked", I would practice with it a lot before carrying it
Good luck,
.
Jim