We're very conscientious of using inflight reverse for descent in pax operations, and fortunately, it's a rare occurrence. Haven't had to do it myself, anyway. The ride isn't so bad in either a -60 or a -70 series airplane as long as you're relatively slow, 250+/-, not much worse than use of spoilers in other aircraft. Generally, if we need to use them to make an ATC restriction (arrival at LAX during busy times comes to mind), we'll use them, but if you need them because you screwed up your descent planning, tough on you!
Once you're in a situation where you're landing that long, though, it's time to go around. You're WAY beyond any condition where use of reverse can be of any help.