Additional long term use comments.
This dust has been rough on the wax. While I do keep track of when I replace parts (by mileage value in the strava app by bike, I wish they had hours), I don't have a much level of detail below that other than "in general", so take these comments for what they are worth.
The dust has been rough on wax. I mtb most days in the week and it has obviously been really dry. The rides are between 1-2 hours, 7-18 miles. While the chain doesn't look dirty and always wipes clean, it seems that it gets really noisy on the 3rd ride after drip reapplication. Hot waxing it extends that but not by much. So I am reapplying after every 3rd ride, which seems like a lot. Anyone else experiencing this?