I'm not certain what you people were expecting but it's been over a year and the Gromacs code (Core_78.exe) is working and is using AltiVec quite nicely.
I would think that you with G4s should have seen a periodic point increase. I've been steadily above my Tinker-only folding points per day by about 1.5 times.
I'm not certain that the Tinker code (Core_65.exe) will be changed at all. It is written in FORTRAN and I'm not certain the gcc FORTRAN will do any good with it since Apple doesn't consider FORTRAN a necessity. Apple doesn't even distribute the standard gcc FORTRAN compiler or a FORTRAN to C translator.
I'm glad to see that the team is doing so well.