I put you on a set both times - unless/until I see you showdown TPWK or some other such hand using the same move.

Jumping ahead, I think you are promoting the idea of using this line as a stone cold bluff. But sets make money because many players with TPTK will call down much more often than they should in this situation. Sure you could be up against an opponent who is smart enough to lay it down, but will he fold more than 50% of the time? And once you have to show this down, every observant opponent will be aware of it.
I suppose you could have T9s or 67s and that would make this more of a semi-bluff, but there are plenty of better semi-bluff opportunities if you are just trying to advertise.