meef, I have never competed in sanctioned events, but I did well enough in an autopistol transition training class with an early SIG P220, which had the Euro-style mag release, against athletic hotshots with their 1911 pistols. I had previously carried Colt Commanders as duty pistols, but finally got frustrated with reliability issues, and went with the P220. It definitely took some time to adapt to the DA/SA transition, but I adapted, and our final qual was shot competition style, and I was either first or second; can't remember for sure, this being in the early 1990's, and not the only firearms class I attended.
BTW, even though this was a revolver-to-auto transition class, I had already been carrying autos for several years, as a quirk in policy allowed us to switch to autos without first taking the class, as long as we completed the class by a certain date.
Just to be clear, I later owned reliable 1911 pistols, and still have one of them. I currently must use a .40 autoloader as a duty pistol, and am thankfully given a choice of several makes/models, privately purchased, so I use SIG P229s. I could still use my 1911 on my own time, but don't presently do so, as I believe in my serious pistols operating in a similar manner, and after 24 years of wearing a big-city police badge, find anything from .357 mag/SIG on up, with premium ammo, to be suitable for fighting.
On topic, DA/SA or Condition One, both work fine, and so does DAO. If a clumsy ox like me can learn all of these three systems, just about anyone can do it. Mastering all three at once may be a tall order, and that is why my 1911 hibernates in a very secure safe for now.