If I were to ever put a manual trans behind this motor, I would definitely only use a dog box. Clutchless full throttle shifting appeals to me

That's the idea anyway, I like the way a dog box can be shifted so quickly as to not upset the chassis dynamics anywhere near as much as a synchro trans.
The GF5R G-Force 5sp dog box is apparently remarkably quiet, considering it's no compromise racing heritage. I wonder how the T5 would sound???