My plan didn't work as I'd hoped, sadly. Linux happily formatted the root directory in-place, but it was not happy about mounting it again. Said it was "busy". So, I had to put in a CDROM to copy my files.
Anyway, I'm basking in the cleanliness. And I'll be enjoying that specific-to-gentoo joy of recompiling all my shit for the next few days.
Speaking of that, I'm writing this with the mighty DILLO
! Web Browser of Kings. (Kings, perhaps, of small, third world city-states).
I'm also running e17 now. Most of my features are in it, and it looks like it's more stable. We'll see how long this lasts :D