I managed to find a bandit so weak he cannot harm me (Mudcrabs do a lil damage, this guy was boffing me with a foam bat) and for some reason, he would not move, just whacked me a few times, backed up a bit, cocked his head as if to ponder why I wasn't injured and then hop back in for a few more frustrated swings. So, I just left.
Went and made a coffee, sat down to finish a comic I'd put off, did some laundry... an hour later, I came back and taped the mouse so I was blocking and went to watch a movie. I came back and both Heavy Armour and Blocking had gone up about 15 levels each, to between 50 and 60.
So, playing normally, they'll max out in about a million years. I'm starting to think everyone who had level 92 characters on November 12th just brainstormed power leveling techniques. I've seen someone max their Alteration in one spell. One. Fucking. Spell.