From what I know, the major blockers are battery life and unit cost. The battery life is decent (or so I read), but it's not near the "walking around" level. D

From what I know, the major blockers are battery life and unit cost. The battery life is decent (or so I read), but it's not near the "walking around" level. Display area is also important, but that's a quality thing; there's just straight up things you can't do without enough battery life and given too much cost.