In addition to the issues like MMS not working, there are lots of papercuts that collectively add up to a really annoying experience. I kept having issues with the battery being recognized one minute and not the next. The touch detection needs some polishing, as does the keyboard. They are usable but have some metaphorical rough edges that need metaphorical sanding. Battery life isn't great yet either, I assume because it's not optimized yet.

That said, go ahead and get one. They're cheap enough that they are fun toys, and it's a way to vote with some dollars. Even tho it's not ready for daily driving, I think it will be in a few months, or sooner given how fast things are moving in the community now that there's real hardware people can buy. You can help with development by reporting bugs and such. Also you get to be a part of history!