So how is it holding up? How much daily driving/cruising do you still do with it? I used to drive a Mack and am used to floating gears, you mentioned that with practice you were smooth as synchro'd but you didn't indicate if you were floating or clutching. If you're floating, do you do that to downshift while crusing, as well?
It's holding up fine. I drive it probably 7,000 - 8,000 miles per year. I always use the clutch, regardless if I'm granny shifting, or shifting it hard. For downshifting, I blip the throttle to rev match and it smoothly goes out of/into gear.
It's been on my mind to pull the cover and take a peek at the lugs on the plates, but it shifts exactly the same as the day it was installed, so I haven't bothered.