IMHO, white letters on black keyboard are extremely difficult to see in low light. When I use a notebook with black keyboard in a dark room, I have to illuminate it with USB lamp. Now I have Toshiba R500 with white keyboard — it’s quite comfortable even in the dark.
And about the better contrast for the eye… There is a reason why the black text on white backgroud became a norm…

but in the usability stakes, a smartphone will blow this out of the water.

http://www.youtube.com/watch?v=HNfIzSmC6s4

“Repo­rted­ issu­es inc­lu­d­e po­o­r­ mo­l­d­in­g­s ar­o­un­d­ po­r­t­s, t­o­g­et­her­ wit­h r­o­ug­h o­r­ chipped­ fin­ish t­o­ t­he cl­amshel­l­ MID­’s hin­g­es an­d­ ed­g­es. It­’s al­so­ po­ssib­l­e t­o­ see d­ir­ect­l­y­ in­t­o­ t­he casin­g­ t­hr­o­ug­h t­he o­v­er­-sized­ cut­o­ut­ fo­r­ t­he b­at­t­er­y­ co­n­n­ect­o­r­.”

This UMID however I’d pay more than $500 gladly due to it’s size, as it unlike the Vaio P *IS* pocketable, I’ve had a UMID in my pocket

Btw here is a podcast between myself Chippy and JKK while I was live at the UMID booth at CES 2009: (see next post)

P.S. Due to the Skype (this was a skype call) lag there a little confusion when I ask UMID reps things, which made Chippy believe I was asking him

Anyhow dynamism.com does have it listed on their site but without any WWAN option if I recall correctly.