I still to this day don't know why these things never really caught on but, I have a Steinberger with a Trans-Trem...and I LOVE it!
Can easily...instantly...change to a step down, or a step up. If I need to, I can quickly adjust the master tension knob and get 1/2 step up...or down...tuning.
I have a ZT3 and loving it. I reckon it looks the part as well for our '80s concept band. When I can get the right colour I will buy another for a spare. Beyond the transtrem it is my favourite guitar!