For me, I think the number of hours it can remain in 'instant on' standby would be a more useful figure of merit. I don't imagine frequently using one for hours on end, but being able to use it for 10 mins at a time several times a day, and not needing to charge daily - that would be attractive (weekly maybe?)

A keyboard as good as a Psion5 would be a very big draw for me. It's very tempting, but between the GPD Pocket and Chens promised 'Lauta' homage, I don't think Gemini are going to get my money.