Alan, I for one have always liked the skull and crossbones (or swords, I guess, but I like bones better). But I would ditch the text, but that is just my personal preference.
I have a skull and crossbones on my 750 cafe. You can see it if you follow the link in my signature. And frankly, I don't give one rip of someone out there thinks it's cheesy, or "ghey," or hipster, or whatever. It's on ONE of my bikes... one of my NINETEEN bikes. When I have 19 bikes, mostly vintage except for maybe 3, and someone wants to think I am a "hipster" or whatever just because I have a skull, then poop on them.
Besides, you can always change it in the future if you grow tired of it.
Just my 2¢.