Interesting review - thanks.
It is not something I have tried before, and frankly it hasn't even crossed my mind. Having said that, I do enjoy domination play and have seen dominant girls and (light) dominatrices before.
I hope this does not sound like a daft question - how do you see the difference between a dominant girl with a strap on and a TS?! Is it really just a psychological thrill or is there something else?