Novaks, will if you request them mill a falt on their sights for one handed drills. They may even have some in stock.
Original Heinie Sights give good purchase for a one handed rack off a stable belt, pocket, etc. Slant Pros, work well too.
Bomar and other adjustable sights have a tendencey to become tangetnally moving objects on slides. They break. I have seen it on numerous occassions, both while training and competing. The worst offender is the Colt Eliason, haven't seen one yet that hasn't sheared a few pins.
AO Express sights are great sights. They are fast at short range and with practice 12" plates at 25yds are no problem. No with tritium front and rears they are a great option. Neat concept, they have instructions on how to use them--read and follow.
Application wise, most people under stress shoot off/out of the sights. We think because the handgun is pointed generally at the target we will hit it. This is why there are so many rounds unaccounted for in officier involved shootings.
Using that little bump in the front of the barrel or slide rapidly increases hit ratio; unless we are talking up close and personal. At contact distance 5-7ft one must be able to shoot from a retention position(factory ported Glocks or any ported handgun suck for this)is needed.
Much over 7ft, as a shooter for both stopping the assailant and liablity reasons use of sights is a GOOD THING, and just as fast as "point shooting". The problem occurs here when we have the mind set, I have to have a Weaver, Isos-Weaver, Isoceles stance. Your feet and leg position don't matter, you shoot with your arms, shoulders, and hands; feet provide a platform.
What happens when you are on the ground, on steps, uneven ground, etc., for that matter shooting from a supine position? You have to use your sights to get hits. Where ever the front goes, so will you rounds.
I share this with you as someone who is a competitor, trainer, former MP, I have been shot at and shot other individuals. You have not seen my name in any of the guns and bullshit articles, nor will you. I have trained and trained with FBI SWAT Teams, variuos military Special Operations Units, several PDs nationwide, attended many istitutions of higher firearms education and FWIW, I am a former SF Operator. In all cases use of sights is taught, even when using shotguns and M60 machineguns.
Take your pick of sights, Millet, Heinie, MMC, AO, Novak, factory; USE THEM. You will hit what you aim at; packing a handgun on the street be you a civilian, a local cop, federal agent; you are responsible for every round that you send down range if you are in a situation that requires you to shoot.
