Is scale leather going to be one of those armors that can be only crafted by those with appropriate Crafter perks, as it seems to need a bit more technical know-how than Boiled Leather does? Perhaps those are yet to come, eh?
Also, is leather essentially going to be a processed material, as you can't really just get that off an animal like other things?
Finally the numbers look alright preliminarily for defense values but yeah, some playtesting to determine how well they work is probably in order.
EDIT: Also good on the one animal companion limit, as managing multiple animal minions seems to me to be a stretch of the mental capacities of gobbos, given they're primarily hunter-gatherer types, it would seem. Not very knowledgable yet in the matters of Animal Husbandry and the values of herding.