I've got round to lapping my hones with the DMT8C, and I'm kicking myself hard for not getting the D8XX instead. Lapping 6 hone surfaces takes a long time. In fact I had to leave some unfinished corners, which are low, so I can work around them. It took more time because I wanted to be sure to avoid damaging the D8C - I lapped under water and every 20-30 laps I would run a brush over the DMT to remove any trace of slurry.
The lapped Dragon's Tongue looks greatly different. I imagine it will cut a lot slower and give a smoother finish than the original surface. I have left one side rough, it might come in handy.
I have to give another thumbs up to the DT. It is just so perfectly uniform. There are no defects or variances, it's just a big slab of consistent material. It almost seems too perfect to be a natural stone! :D
I've been reading some of the other threads on the coticules/BBWs. The more I learn the more confusing it seems, but it's falling into place. FWIW I did the following progression on 3 razors and it worked very well:
BBW+slurry, diluting down to just water
Coticule+slurry, diluting down to just water
Dragon's Tongue + water
Series of diamond pastes on balsa strops.
From what I've read today, I may have been better off skipping the coticule+slurry stage, and finishing with just coticule+water. But the shave was excellent anyway.