If we're talking about hit soft/hard caps, casters are the only ones with one raid hit cap; non-casters do benefit from hit until a hard cap is reached, though reaching this cap is quite excessive and unlikely to be reached given the value of other secondary stats. Don't know how stat priorities are for all classes in this expansion but I know that back in Cataclysm Hit was a worthwhile stat to have for Fury Warriors and at least one Rogue spec. Now in MoP Hit and Expertise are worthwhile tanking stats for activated mitigation abilities.
Missing once, probably not. But I would ask you to try doing the holiday boss with no-low hit/expertise as a caster versus a non-caster and see which performs better.
Edit: Since caster expertise was brought up, I'm kind of curious if reforging a Hit+X piece's X stat to expertise can prove to be more useful than other options.