I can't care for it. I can only think of
Oscar the Grouch and
Oscar Madison. For some reason,
Oscar Wilde never comes to mind when I see or hear the name. I agree it's funny and geeky, but I fail to see any handsomeness. I can't think of any nicknames, and I don't see why a nickname would be necessary.
Oscar is only two syllables and it trips right off the tongue.
I'm not sure that
Oscar Wilde is a great namesake. Yes, he was talented and brilliant, but he also suffered persecution for his homosexuality and died destitute at age 46. Not saying he was a bad guy, at all, just that when I think of him it brings sadness.