After a lot of research trying to find my first CCW, I chose the glock 19 precisely because it did NOT have an external safety. I am left handed, and many (but not all) external safeties favor a right handed person. Plus, under the stress of a life-threatening situation, I did not want to have to remember to take the safety off.
I still like my glock but have been carrying a ruger sp101 spurless hammer .357 in a CTAC IWB holster. Again, I bought it because it is extremely simple - pull the trigger and the gun goes bang - and because there is no external safety.
When I first got the glock, I did not carry it chamber-loaded, and there are scenarios where the noise of racking a slide might bring unwanted attention from a BG and cause me to give up an element of suprise - that's why I went to the Ruger.
I also thought the ruger might conceal better with a shirt tucked in over it.
I am not worried about accidently firing a chamber loaded glock, I just didn't want the springs to be under constant tension.
I think both a glock or the ruger revolver make excellent carry choices.:wavey: