I feel the same way about "an homage". The H is normally pronounced on "homage" - for example, you would not say "pay homage to" with the faux-French pronunciation. So you therefore would say "a homage". It sounds so pretentious when people pronounce it the other way.

Words are often pronounced differently in English depending on whether they are being used in a noun or verb context.

e.g. attribute, increase, conduct

I think that's one regional. It'd be super weird to pronounce the h in homage in most of Canada ime.