Actually wait, I take it back. I have seen a few good male Kenshin cosplay. They were all Samurai X Kenshin though.

He's less effeminate in the Samurai X era. But there are some really hard ones for guys to pull off, Kenshin definitely being one of them.

As far as Inuyasha goes though, I've seen very little good Inuyasha cosplay. Reflective of the series, I'd say