I've run Kaeltar with bombs in two out of three games with the Kiuutan so far. It's a major headache because you can't reserve drop them if you put bombs on them. Basically, the tactic is viable on paper but extremely challenging to execute in practice even if you take two Kiuutans in spiral and put a bomb on each, which I did. I'm hoping it's a learning curve thing, though. Also, in fairness, the scenario I ran the two Kiuutans in was Acquisition, which has thick deployment zones that keep them from getting the most out of their inferior impersonation.