I know you asked this of John specifically, but I'd love to chime in with my own anecdote on this subject.
I've been using my nearfields (HR 824s) for some 11 years, and I love them. But my first generation of home studio before that - inferior in so many ways that I can't count them - I had a set of three way room monitors set off the far wall across the room from the mix position. I also had a friend who has a mixing setup in a spare bedroom with two different sets of two way far fields.
I would frankly now give my nearfelds away for either set up - hands down, no question. My current room situation does not allow it - yet; otherwise I'd make the retro change in a heartbeat. I'm chomping at the bit for the opportunity to set up a farfield CR room though.
If you've never mixed in a farfield situation, it's hard to explain; but for me there's a luciousness, a luxuriousness, a natural comfort in mixing in a far field that I've never been able to get in any of the nearfield situations I've worked with. Somehow, expanding the stereophonic image to a closer to more real-life size out in front of me instead of having everything right in my face just makes a huge difference (for me anyway).
G.