Oh really??!? Is this the voice of experience talking here? .
Yes
With a single tank there's nothing you can do in your pb/w I can't do in my Transpac.
Perhaps that's true, but that wasn't the question. The OP's question was "Is the TransPac an ideal tech BCD?" and the answer to that is an unequivocal NO. (This is probably a case where "no experience necessary" works in terms of ability to answer the question.)