The grey case looks very nice! But let's hope the quality is MUCH better than the expensive super crap that I ordered from Sony Japan for the DPT-S1.
Only PDF support is still no problem. The Sony just works.
Can't wait to see a RP1 in person... it's sad that there are still no physical buttons on both sides to flip pages.
Does anybody know if the pen technology is compatible? From the pictures it does NOT seem so, the RP1 uses an active pen. Have a look at the picture with the USB-cable:
http://www.sony.jp/digital-paper/products/DPTA-RS1/