I would rather not carry a handgun, with a fully-cocked striker, unless it has a VERY positive-engaging manual safety. A Glock’s striker is not fully-cocked, so, I am relatively OK* with Glocks. (I might never have bought into the Glock system, had it not been the apparent least-evil authorized duty pistol choice, for some time, during two time periods, during my LEO-ing career, but, having invested so much time, ammo, and energy into that darned Glock trigger pull, I am not going to waste that investment.)
Striker-fired pistols that do have thumb safety levers, that I have handled, do not have the safety levers positioned in a way that works for me. In my Sixties, I am too old to try to learn new tricks with my arthritic thumbs, and being retired, the ammo needed, for the 10K+ repetitions to attain mastery, would be too costly.
I would rather be able to feel a guns’ hammer, when re-holstering. With a 1911, I can engage the thumb safety, then actually put the tip of my thumb in a position to hold the cocked hammer in place, and partially block the hammer, while I re-holster. Most other hammer guns allow me to feel the back of the hammer, to ensure that nothing is trying to cock it, as I re-holster. This is not all-or-nothing, so, as I said, above, I am relatively OK with Glocks.
Second-strike capability is actually something that I do not find necessary, because I have trained to immediately start a malfunction clearance drill, in the event of a failure to fire.
To be clear, I am not a die-hard Nineteen Elevener. I use a variety of types of auto and revolving pistols.
*”Relatively OK” means that I will use Glocks, in carefully-selected holsters. I would rather be able to feel a hammer, when re-holstering, so, feel a need to “look” a Glock into the holster, whereas I am OK carefully re-holstering a hammer gun, by feel.