If I were faster with the thumbs this could have been a record. Very little resistance was put up by this one. I started with the downs, and when I checked the long crosses they were almost all done. Except, I guess, for CENSUSTAKER (47A: Decennial official). I couldn't make heads or tails of the clue, so I really did need for it to be pretty much completed by crosses.
The theme is great, in my opinion. A simple phrase - COUNTEREXAMPLES (58A: They disprove claims … or 17-, 23-, 38- and 47-Across, in a way?) - is given a twist to define occupations that require counting. Very nice.
In the fill, I don't count too many grumblers. Maybe TOS, TSOS, and ANE, but nothing truly hatable, and there's some very nice bonus fill in MOCCASIN (29D: Comfortable footwear), PRATFALL (18D: Buster Keaton specialty), and SULTAN (45D: Ottoman bigwig) (It's not agha or emir!).
All in all, I count this as a pretty nice Monday.
p.s. It's a John Lieb twofer today, as he also has the syndicated.