A Glock should be carried with a round in the chamber, ready to go.

A holster is mandatory.

Kydex is an excellent choice.

As minconrevo mentioned above, Safariland ALS holsters (-especially if you like paddles) are incomparable. Nothing is faster, safer, and more secure.

Do not add any gadgets to a Glock.

There is a world full of perfectly serviceable pistols out there, from a host of manufacturers, available from the factory with traditional manual safeties. If you are not comfortable carrying a Glock as designed, I would never argue with you.

I would suggest that you buy a Sig, or a Smith, or a CZ, or an H&K, or an FN, or a Beretta, or...

I would argue that adding gadgets to a design not intended for them, especially the ones that require you to poke around with your finger, under stress, with a time component, in a space that is only designed to make the weapon fire, is not a wise idea.

My two cents? If you do not trust the Glock Safe Action system, then do not carry a Glock. But do not carry a neutered Glock just to make you feel "safe."