Mark--This is an issue I have given a lot of thought to. I am a bilat and work in a similar, maybe less relaxed work environment and I was back at work at day 12. That's pretty fast, but doable if you are in a pure office environment and if you are relatively fit to begin with.
But here is the catch. When I went back to work, I changed my focus from rehab to work and there was nothing I could do about that as it was natural. I also slept a lot less. I am progressing very well; however, I am convinced that I would be recovering much faster if I had taken more time off, slept more, and spent more time thinking about getting better. In hindsight, I am convinced that your body just needs time to heal itself and will take care of most things if you just allow it to. I really think that, for me, I require about 1-2 extra hours of sleep per night just for healing. I also think that this is necessary for about 8 weeks or so.
This is just my opinion and as I said, at nearly 6 weeks, I am recovering very well. But for me, I didn't have the ability to take 4-8 weeks off. I wish I had.