As a TT hard wired (and previously regular owner) I think...why?
For one, in the clip it does not sound good and I donīt like the thought of not having a tube powerstage.
To me this could be a nice toy for some, but for most the TT is by far the go to thing. The TT is not expensive and it will sound better (I bet you). While the TT can be loud you can get great sounds at resonable levels, it is amazing for recording, and the clean headroom is enough for most rock guitarists (it ainīt a fender after all).
Which nice the MT is supposed to fill...I donīt know.
5w all tube TT version would be cooler and a little less unneeded.
Iīd rather hear more about the Jim Root TT and how it compares to the TT and DT and leave this MT in the ditch (I am not saying that it cannot turn out great, but damn, Iīd be suprised).
The OR50 looks nice too.
http://youtu.be/0ZgxGUK97gY