Any trigger system can be learned, with due attention to perfect practice. Maintaining proficiency with more than one trigger system at a time can be challenging. I know that my available time and ammo budget do not allow for my desired level of proficiency with multiple trigger systems. I can still be decent with all-SA, but am best with all-DA, because I concentrate on long-stroke DA practice.
I have, in the the past, concentrated on DA/SA. I am glad for SIG's DAK trigger system, which allows me to develop high proficiency while cross-training with my DA revolvers, a DAK trigger pull mimics a revolver trigger pull so well that practice with system benefits the other system. I wear a badge; the P229/226 are best fit of the authorized duty pistols, and DA/SA and DAK are both approved. DA revolvers are my back-up weapons on the clock, and may be primary concealed weapons off the clock.
When my life circumstances change, so I can practice/train more, I may well add 1911 pistols back into the carry mix. I can still shoot a 1911 well enough, but if I do not practice the draw-and-shoot sequence enough, I may get my finger position on the trigger face wrong, resulting in shots to the left of my intended point of impact, until I note the mistake and adjust my finger. Staying with DA, at my current level of training, means my draw requires "no mind" from perception to draw to shot.
Or, I may not ever again use 1911 pistols for primary 24/7 duty/carry, as I did at times until 2002. The 1911 is a superb battle pistol, so I will always keep one around.
When I make a conscious decision to go and fetch my 1911, rather than use the SP101 that will likely be on my person, I have the time to make the mental adjustment to the weapon I am deploying, be it 1911, shotgun, or rifle. As I am consciously, rather than unconsciously, deploying the weapon, my nervous system is then prepared for single-action trigger pulls. (I would rather fire a .45 in a darkened hallway, than a .357 Mag.)
The Glock trigger, or a DA/SA trigger, are presently less familiar to me than DA or SA. I can make either work for me, but I will not choose either when the familiar is available.