Oh yeah! Just tried SSHFS-FUSE - that's what I wanted! :-) Thanks for pointing that out. Okay, that's officially cooler than WinSCP. (Of course WinSCP is still the way to go for Windows usage.)

FYI for anyone else running Gentoo, installing was a breeze:

$ emerge sshfs-fuse

When you update your kernel, you also have to do:

$ emerge sys-fs/fuse 

[As a normal user]

$ mkdir boodebr 
$ sshfs username@boodebr.org:/usr/www/users/boodebr boodebr 

Then I could edit files directly as if they were local (under ./boodebr).