What I can say is that within the FreeBSD camp AMD64 is gaining share rapidly.
What I would really like to see is an improvement of the source layer around the binary core parts of the NVidia drivers that is flexible enough to use the same binary core on Linux and FreeBSD.
Once there, you can have the FreeBSD people hack away at the source envelope as they see fit.
FreeBSD people did some amazing things along the same lines in the past. Making the Linux binary of vmware run seems to be about the same complexity as this project.