hmm probably not bad. But a bit unbalanced, 68% crit chance without crit dmg, very low toughness and vit for char whos go melee sometimes, no might, no vigor for avoids, no heals from explosions....i think if repalce bomb kit by elixir gun and focus more to Alchemy and Invention its should be good =) also some precision to vitality or toughness.....
So much condi dmg+precision is better for granader, because he can stack bleeds very fast. Standart engi havent so many stacks, so he cant profit from condition dmg. ^^