Since Im the OP, I should probably chime back in at this point FWIW.
A few years back, I had 2 weeks of vacation, no significant backlog of projects, and I was in the mood to build shop furniture. So I looked at several high end benches and challenged myself to make one just as useful, out of dimensioned lumber. Having lived with it a while, Im (still) really pleased with it. Now, Im in the tuning phase - re-flattening it, adding more dog holes, adjusting the face vise, etc. Like others, I learned a great deal building and tuning it- which for me is another reason I do woodworking. And I love building shop furniture that makes my life easier - my new (plywood) tablesaw stand ROCKS!
I totally "get" the point about making masterpieces for the garage and then not being willing to use them for their intended purpose. I personally never understood guys doing that, but thats just my view. (You should see my crappy looking but very functional router table!)
Finally, as I said above, I think Winton's bench is beautiful. But remember that he chose purpleheart because it met his specifications - not because he wanted to build a masterpiece. It sounds like hes going to use the heck out of it and take the dings, dents and scratches in stride. Nothin wrong with that, IMO.
Have a good weekend. Im off to drill dog holes!
Fred
"All that is necessary for the triumph of evil is that good men do nothing."
“If you want to know what a man's like, take a good look at how he treats his inferiors, not his equals.”