Bad form to answer my own question, but I found a couple things that are *close* to what I'm looking for, though I still haven't found a native pdf reader.
It appears that Safari can directly open pdf urls, so you can upload pdfs and read them online.
There's also an ebook reader project on google code called
books.app though it only reads text and html (it does do gutenberg html). The lead dev/project owner has grudgingly added pdf to the dev plan, though he made it low priority, so it doesn't appear to be anything that's going to happen soon.
Soonr give remote access to documents & skype, but from their website appears to reformat documents for mobile viewing (free service for now, soon to make a premium paid service). Drat, *so* close.
Is there anything else out there that I've missed?