If you aren't comfortable with keeping a round chambered in your Glock, then the Glock is not the correct weapon for you.
Maybe one of those NY springs that are heavier or a Comonilli (sp?) safety will work if you plan to keep the Glock.
I went through both of these thoughts in settling on a carry piece. For my personal carry situation, I wanted an external safety or else would not carry with one in the chamber (tried the NY1 - definitely harder pull, but still only 1/2in. compared to my long-pull DAO j-frame - carry the j in complete confidence).
I looked high and low for a subcompact automatic with an external safety that would compete with a G26 in terms of reliability and concealability. No luck. CZ 2075 RAMI was the closest, but its safety only works in Cocked-and-Locked mode. The HK USPc is too big. Beretta is supposedly coming out with a subcompact PX4 with safety, but you sweep it UP for fire mode - for me I don't want to go there - too much time logged on guns with "sweep down" for fire. That would screw with me under stress! Plus, though small, its reported dimensions are somewhat larger than G26/27.
Thus, my conclusion is that a Glock w/o a safety is fine if you are comfortable with it (not trying to convince anyone otherwise), but if you feel you must have a safety, at least in subcompact, a Glock 26/27 with Cominolli is still the best gun out there... I get LEO discount, so I'll have $525 in the gun with the safety (taking it to the Smith this afternoon).
One in the chamber
with a safety compared to NOT carrying one in the chamber: having the safety seems the less onerous. Sweeping it off becomes automatic (and already is for me, from previous guns), and is accomplished with one hand (racking the slide is doable one handed but difficult).
To each his own - just sharing my thoughts...