Remember, svn rev's are NOT supported in any way shape or form.
some days there might be a dozen commits, some break things and the next one might fix it. Tough to say.
The gui might be half done, might be a feature that is sort of implemented and sort of not.
I would ask that compiled binaries not be distributed. Please, if your interested then learn to use svn and compile yourself. Along with reading the commit notes and following the irc logs might help understand what sort of state things are in at any given time.
When the svn is deemed stable enough, a developer snapshot will be released which is generally safe for public consumption. Until that time, you get a 50/50 guarantee ... if it breaks you can keep both halves.