Our own Engadget Japanese had an opportunity to play with Toshiba's odd little WS206T for Japanese carrier Willcom -- one of the concept devices demoed at CES, for particularly observant readers and rabid Toshiba fans -- and came away largely unimpressed. Shoving a thin, internet-enabled tablet into an old-school leather notebook sounds cool and all, but the problem is that the hardware's weak -- the screen's smaller than it could be, Willcom's PHS network tops out at just a few hundred kbps, there's no voice calling, and it runs some weird widget-based custom UI on top of Windows CE. What's more, it's