My bride has two, one with a scope and one without. One, or sometimes both, see use weekly. No problems and they are accurate.
I have a MKIII. Same deal. Use it weekly. (We are range rats.)
As far as cleaning goes, I've been stripping them down about every 5k rounds. Each time I have, however, I've found no real need to do so, for my "no breakdown" cleaning procedure has been working well enough.
I use Ed's Red (= parts of K1 kerosene, odorless mineral spirits, Dexron ATF, minus the Acetone), but Hoppe's works too.
Try this for a no breakdown, after range cleaning.
1. Lock open the bolt, hold the barrel pointing straight up and squirt a few tablespoons of Ed's Red or Hoppe's against the bolt face, letting it flow down the bolt and out the back end into a catch pan of sorts. A yellow mustard bottle with the pointed spout does well here. Work the bolt in and out a few times while its wet.
2. Repeat Step No. 1 again.
3. Wet a patch with Ed's Red or Hoppe's and wipe out the chamber area, paying particular attention to the loaded chamber indicator nearest the barrel. A small screwdriver will help to scrape out the gump that gathers there.
4. Run a dry patch around the chamber and inside the grip.
5. Wipe down the outside and put it away.
All I can say is that it works and I've seen no downsides.