If you want to capture Umberdroths be a beastlord, having my sovereign running around with an Umberdroth or two (or three or four if you're really lucky) is one of the main reasons I take that trait. Plus brilliance for the magic power. If you do that, on the quest where you can find or fight an Umberdroth it will be much higher lvl if you fight and tame it then if you get it via the quest. Although that probably is influenced by the monster lvl settings from your game, I play on max monsters at max lvl.
That plus a commander with an army of cave bears is doable early game and is pretty deadly (literally ), which is why beastlord is my favourite background.
I have a question about the loot tables, because I am wondering how completely random certain items are. In the game I abandoned because I didn't install the mod fully I had found me a bear tooth, which was pretty freaking amazing as it gives maul. Do only bears drop it, and if so can it be from any bear or only certain bears?
Also, I am curious if taming as opposed to killing affects loot. Certain mobs I almost always try and tame, like cave bears, the big spiders, etc., and I was curious if I might be missing out on higher lvl loots, in particular the bear tooth.