Maybe there could be a (crippled?) gripd-version that would work with libwxgtk2.2-python?
I think the only thing that depends on 2.3 is the wxToggle control, but at this point I don't really have the time to support multiple branches. But if you feel adventurous, remove the mToggle class definition from gripdControls.py and the related code that calls the constructor in gripdMain.py. I thought someone on this list made a Debian package, but maybe I'm wrong. I don't have a Debian box, or else I might consider doing it; how hard could it be? :).
Joe