Don't forget you have Rockbox for Hifiman now... although this doesn't change the fact the battery life sucks and you need to buy expensive spare batteries for it (the 801 anyway) if you want all-day use.
If this is good (and the Sabre DAC is very en vogue atm), then people will buy it. This is Head-Fi after all. There were plenty of people putting down big money for the JH3A, HM-801s and buying additional amp modules, iPod/CLAS/amp or iPod/HP-P1 setups, all of which are big money. If it's in the $800-1000 bracket then it's priced competitively with those kind of rigs, and I'd still be interested as long as it sounds stellar.
Anyway, bring on more specs, pictures and most importantly, reviews from people who own other high end rigs, because ultimately I'll want to know how this performs against them. Someone get ClieOS a review sample! ;)