My 9mm has worked flawlessly with 1-2K rounds through it.
Complete takedown is a bit of a pain, but also not necessary for routine maintenance.
Mag release would be nicer on the other side, but just like any other rifle that doesn't have an AR style release, you get use to it pretty quick with practice.
Same as the bolt hold open (or lack thereof), it's not nearly as big a deal as some would make it out to be.