It's not around the world, but I do plan on taking my C22 on Lake Superior.
I've only been sailing it for a little over a month now, but I did manage to get it out on my little local lake this high wind day:
And it handled great! It was exciting, but never scary, and we were always in control. My main is old and I don't yet have the proper controls to get it as flat as I'd like, so I imagine with a little fixing there even much stronger winds would be fine.
It is waves that would worry me. I'm on a small lake, so even with 30mph winds there are no waves of any height. It seems like it wouldn't take much of a wave to overwhelm a C22. Less than an 8' beam and only 25% ballast. And since mine is a swing keel if you did get knocked down much past horizontal there's a chance that the keel could slam back up.
So anyway. I don't think *I'd* take a C22 around the world. But if you do, please let us know how it goes!