that book also seems to explicitly lay out (via the Scorpion Military Organization chart) that Scorpions don't use any vehicles in the non-garrison portion of their touman for... some reason.
Yeah that really confused me, and is part of the reason I was asking. Like, we've seen for other factions that once you reach a certain size you need to be using vehicles to bulk out your forces. And especially for the Scorpions vehicles are so much easier to make with a lower tech base, and most vehicle weapons/armor are the same as for mechs so there's no reason to not make dropship loads of vehicles while trying to build up to producing more mechs. I get clans no like vehicles but still.
Another thing, the Eridani Light Horse uses vehicles to great affect and since Goliath Scorpion absorbed part of them I can't imagine they wouldn't try and learn from their tactics.
Also I just learned the clans already have variants of tanks like the Demolisher so there's no reason they wouldn't at least have a general idea of how to make one