I wouldn't avoid them. If we're in the same setting and have to have interaction then of course I'd interact with them. I'd find them interesting and probably fun. But otherwise honestly I'd assume that the person is not approachable just because I feel like that person would be stand offish towards me or wouldn't want to interact with me. From experience, people who dress differently don't want to communicate with me and would rather be left alone. But if the person approached me I'd be open to talking to them. As for dating, not really my type.
If someone has a cool sense of style like that I would be likely to approach them or respond well if they approached. I lovethe vintage menswear look and I think I would like your friend's steampunk style. Only thing is not to go overboard like in that picture, two or three of those statement pieces would be good :) but those guys seemed to be at a convention or something, not daily wear. Keep up the awesome style :) I love vintage/romantic clothing myself so to see a guy wearing old style things like me would make me think we could be compatible
I think someone with that sort of style is worth talking to, regardless of who approaches whom. It gives an opportunity for conversation if there is nothing else to make a comment about, and how you've described yourself says to me that you're an interesting individual with or without the awesome clothes and accessories.
honestly if I didn't know him or know of him I'd think he's weird but probably easy to talk to. weird people tend to be either really bitchy or really cool to talk to. but I don't think I'd see him in a sexually attractive way unless the guy under the clothes was really good looking to make up for such an avant garde look. but this question is kinda void because I don't approach men at all anyway
I would probably not approach them because I'd be intimidated. But guys who have a unique sense of style are definitely interesting to me - much better than the guys who wear silly hipster clothes and they all look alike.
what they wear doesn't really matter to me but sometimes its what makes me attracted to that person like the guy in the 3rd link that's dressed like the tbird style I love that style and that's what I'm most attracted to but I find its more the person behind the clothes then the actual clothes itself