I dunno about most, but it wouldnt really be worth the hastle unless i can game, listen to music and talk for a combined 12 hours on a battery charge.....i have an ipod, music check, i have a cell phone, talking check.
Im all for convenience, but lets be real, the iphone will over crappy halfassed games, wont last long enough to listen to music AND use it as a cell phone on a regular basis AND is ging to cost 500 bucks.......ill pass.