I think i've seen others with builds of gftp, but you can use mine (on OS2008) if you want. It's pretty much a basic build/compile which i force fullscreen cause its cramped.

Obviously we need a good (more 'maemo-friendly') utility, but for now you can grab this quick build here :

http://wardenclyffetower.com/MaemoFiles/utils

If your english-us grab the smaller of the two gftp debs.