Glocks are no more reliable than any other modern handgun, I'd love to know who started that particular lie.
One thing I don't like about Glocks is the need to fire the gun in order to field strip it. If you look at incident reports of ND's, including ones causing death and injury, you'll see that it happened during an attempt to field strip the gun.
and I am trying to figure out the locking block comment, you don't take the locking block out during a field strip, during a detail strip yes, and it only goes back in one way.
Sigs are the worst to detail strip though, and I've done at least a thousand of them, and then re-assembled them, it sucks. and field stripping is harder, not much though, than either a Glock or a Beretta.
Now onto FTF drills. TRB's are a great way to clear guns, but can also cause all sorts of problems, especially if you do it the Glock way, with the hand covering the top of the slide. I know of two people who had light primer strikes and then TRB'd and had the round go off by hitting the ejector in their Glock. They then ended up with nice pieces of shrapnel in their hands and nice burns. Unless you are in the middle of a shooting or a competition, double striking the round, if possible, is a good idea. As well traditional DAO pistols can all strike a second time, S&W 5946's issued to the RCMP not included. Glocks do not fall under a traditional DAO description. they are a unique mix of DAO/SAO.