I had one. Typical Mossberg: Inexpensive, ugly, incredibly durable, reliable (never had it jam once, even when grotesquely dirty), dead simple mechanism (something like five moving parts including the firing pin...), and you could use it for a club after you ran out of ammo.
The things I didn't like about it were the fact that there are no parts for it and no magazines greater than ten rounds (as usual), and even the ten rounders cost as much as a 10/22 mag even though it's a simple spring-and-follower I could probably knock out in the shop for a about fifty cents.
Also, when bench resting the stick-out magazine gets in the way, leaving you with the worst of both worlds... You can't have a high capacity sticky-outy magazine, you're stuck with 10. But even though you're stuck with 10 you can't have a flush fitting one like the 10/22, either. And breech loading is a royal pain.
I got it when I was young and impatient (my second gun) so when I bought it I didn't take any time to clean it, tune it, or blast the grease out. I bought the gun for 89 dollars (I think) at a sporting goods store, picked up a brick of the cheapest ammo they had, rounded up a couple of friends, and took it to the quarry to go shoot at stuff. We went through that whole brick of ammo in one sitting and it didn't get cleaned until a couple of days afterwards. No jams, perfectly acceptable accuracy, nothing to complain about except for the magazines.