Just my opinion, but I find basic maintenance on 2011s to be pretty easy.
if by “keep the gun running” you mean field strip, clean/lube, replace springs, 2011s are pretty straightforward.
but, like any machine, the more you modify things to “improve” the experience/performance, the more you risk reliability, but that is true for all platforms.
2011s can be made to run well. There are probably more variables with the platform due to the volume of aftermarket parts and mods.