As an aside, TrBe is not an easy or starting combo. It is very easy early game, but that's true of any Troll, not just TrBe. But starting around Lair, your terrible defensive stats and limited tactical options will start to catch up with you in a big way. By Vaults, you'll be getting torn to pieces by yaktaur/centaur packs, among other things. Okawaru helps a LOT more for Trolls than Trog; you don't have BiA, but Heroism + Finesse + ~6 M&F skill is enough for hydras, and Heroism itself basically gives you a +5 slaying bonus and extra EV. Not to mention that Oka throws armour at you; sure, most of it is crap, but it means you'll find a lot more Troll-wearable gear than in a usual game.

But ophanim is quite right - as a TrBe, you don't need any M&F skill, just BiA. And you really don't want any until much later, you need all the XP you can get going into UC, Dodging, Fighting, and Shields.