Also keep in mind that bus powered means a 6 pin firewire port is required. So laptops with only 4 pin firewire will still need to go with some sort of external battery power (who came up with this idea of non-powered firewire anyway???)
I've only ever seen one PC laptop with a 6 pin firewire - the Dell X200 (and similar apparently). Everything else is 4 pin.
Regardless of all that, I'm going to be first in line for one of these. This is exactly what I want for my mobile solution (for small track count stuff).
Dirk