Ghirahim is cool, but he's a bit insane, you could say. I'm a male so I don't have a taste for men, but I don't find sword spirits that have a tongue so long it could lick from a mile away very attractive.
Just because I've read some pretty intense fanfics revolving around this guy, I find him very attractive, but it may just be on how he is perceived in the stories I'm reading. I haven't beaten SS yet to be able to honestly say. I always find guys who play rough attractive ^_~
No. I like him as a villain, though. He was pretty funny, the way he got all carried away at times. That just filled my heart with rainbows! He was also a pretty tough cookie. That final battle sure was intense. He made me furious! Outraged! Sick with Anger!
Overall, Ghirahim is the most fabulous villain you're ever gonna see.