Inconsistent click-through behavior is a major problem of OS X. (Gruber has written pages about it.) I don’t think it matters whether click-through is possible

Inconsistent click-through behavior is a major problem of OS X. (Gruber has written pages about it.) I don’t think it matters whether click-through is possible or not – your preferences will just depend on what you are used to – but the behavior should at least be consistent. In OS X, it is not.