I have some Dugast Pipistrello cross tubs with a similar thread--albeit with different shaped and lower profile nubs on the edge. I agree that it's a good multi-surface tread. I find Vittoria road tubs wear out a little quicker than other tires--a tradeoff for a nice, grippy feel. I wonder how those will fair with some road use.
Btw, I've found Brasso (metal polish) to be a good glue remover. Safe on chrome & aluminum. It can leave a bit of a film which should be cleaned of rims afterward. (I think I may have mentioned this once before, but it would have been many pages ago.)
I like the creative use of the hose rack for those tires.