My port has completed; I no longer have active Virgin service.
I am building an 0.8 release which incorporates the Wifi tether, and should be able to to more-or-less test it (at least to see if it comes up); it should work.
I can still build for this phone, but soon won't have it any more. Once I know 0.8 boots and runs I'll post it up here and push the changes back; it's basically just what Isaac did to his repo with the tethering additions.
I haven't done anything else - haven't seen a need, given how well 0.7 has been running.