I like the layout of the HHKB too (even though i dont own one, it seems nice).
I think one problem i might potentially have is the lack of F keys... I kind of like alt+f4, on a HHKB does it have to be Fn+Alt+4 ? And I suppose it might not be very comfortable for playing starcraft 2... since I use F keys a lot there.
Anyways, gratz on the purchase