indycolts,
There are adjustable sights and there are adjustable sights.
Some are quite delicate. Others are very sturdy (Bo-Mar come to mind as for very sturdy ones.)
Other sights are simi-adjustable. These you can get front sights of various hights and the rear sight is driftable. They even make tools just to drift them.
Totaly fixed sights, like on a Smith M10, are tough to sight in if they are off. Others, like Colt NM rear sights, would not take a hard knock if you dropped them (and Colt 1911 National Match front sights fly off alot!)
I find Smith & Wesson revolver sights half way. A bit delicate, but work well 99 percent of the time. Bo-Mar are always good. Millets are ok. MMC look good but I have no experience with them. Hinnie and Novak sights are always good (but usually simi-fixed.)
Now for a combat pistol if I use adjustable sights, I'd get a file and round off the edges (especially Smith&Wesson, Bo-Mar, and Millet ones.) That would do.
Otherwise I'd get simi-adjustable ones like Novak rear sights and a front sight you can change the blade hight (and I prefer dovetailed front sights and Glock style front sight arragements.)