In general Android keyboards are not supported (it's not something we are planning on doing) - though if there is enough support for it we will consider it (start a poll in the gmc.yoyogames.com) - Only the XPeria Play is officially supported.
So... cast your vote now!
I have an Android phone with a hardware keboard and I think using hardware hardware keyboards on tablets is very useful. While the majority of Android devices out there don't use a hardware keyboard, I think that if we don't have the ability to use it, we may be missing out on a niche market that could potentially make or break some games. Not to mention that however unreasonable it may be, I'm sure some people will get reviews saying "I got a keyboard and can't use it. Don't buy this app!" and they rate it one star, or something along those lines. I definitely want hardware keyboard support and can think of many uses for it. I'm much more interested in hitting a type of audience that will say "This app supports hardware keyboards unlike most other apps, you should buy it!", than trying to make an app that's trageting a much broader market that is already filled with similar apps.
That's just my opinion anyway. What are your thoughts?