LISP is prefix notation, not just reversed order. An expression should begin with a function (a verb) and be followed by a list of its arguments (the nouns).

(not (comfortable everyone LISP-syntax))

I'd expect the quantifier to take the predicate as an argument, rather than the other way around.

(not (everyone comfortable LISP-syntax))

probably better. I was thinking everyone would just be data rather (a list of people or something) rather than a quantifier function.

Right, but then you'd presumably want (every (map ...)).

I'm nitpicking, of course... just taking the opportunity to think lispy.