Really? Heavy Metal fans were into cross dressing ever since the seventies. Including gay all-leather biker chic, long curly bubblegum hair and tights in the eighties...
I think him releasing accessible anthems that had widespread popular appeal did far more to isolate Navana from the core metal elitists than any styling choices Kurt may have made.
Plus it's not as if metal bands were against 'glamming' up in the first place. In fact it became it's own sub-genre.
also the atrocious guitar playing and constant mumbling helped a lot in that department.
but we digress. on the topic: i like comic sans. it looks friendly. there, i said it.