Let me give you a comparison to think about. 5 pounds sounds like a lot. But a Les Baer 1911 intended for duty use has a 4 pound trigger (that's not too much less, and in fact the Glock 34 has a 4.5 lb trigger). Would you feel comfortable disabling the grip safety and carrying that 1911 cocked and unlocked? If you answer yes, well, that's your choice, and if you never in your lifetime accidentally violate a safety rule, you'll be okay (trust me, that 1911 will NOT fire unless you pull the trigger any more than the Glock will, even if you drop it). But would you do it?
A 1911's trigger travels a short enough distance that a slight nudge will fire it (if in condition zero). A Glock's trigger pull, while shorter than that of a revolver, is much longer than that of the 1911.
Just sticking a Glock in and out of a concealment holster would scare me to death: sooner of later it might snag on some button or cell phone antenna or some other crazy thing.
That's why I prefer Sigs. I would be reluctant to carry a weapon that had a 6 lb or less trigger for the first shot.
The DA (first) trigger pull on a Sig is around 10 lbs. That's not something that is going to get "accidentally" pulled.
The SA triggers on Sigs are typically between 3-4 lbs, which is ideal for target practice, IMHO.
The only bad thing is the transition between DA and SA. But it's either that, or carrying a 1911-style gun (with a manual safety, which I don't care for), or a Glock with a light first trigger pull.