For english language, swipe typing coupled with autocorrect works astonishingly well. So much so that I use it regularly because of lazyness. What segment does the physical keyboard appeal to? Youngins were born and raised touching the screen, so it's archaic to them. Old timers are jaded at this point to either wait for their dream phone or buy any cheap crap. So who's the target for this 900 usd device?
Combine that with my fat fingers that generally press 3-4 keys on my iphone at the same time I have to spend a lot of time erasing what I just wrote. A physical slide out keyboard would be great.