I carry a Glock36 and find it to be quite safe, I would however not reccomend a holster with a thumb brake as this adds One more element or possible obstruction that could find it's way into the trigger guard while reholstering causing a ND. I would look for a holster that utilizes a triger guard retention system like the
Fobus or Cross Breed. It is one less step when reholstering and is extreemly reliable. Good luck and keep your finger off the trigger
I always keep a round chambered no matter what firearrm I carry. It's the only way to safely carry a weapon so that you remain safe! More often than not, the "safety" is inherent...keep your finger off the trigger, don't point the weapon at anything you don't intend to destroy and everyone is safe!