truespace was my first cgi app .not until I got other cgi app's did I know any difference between ui's .
truespace and C4D ui is 100% customizable. I haven't used truespace in years ,not since I got C4D.
but box modeling is the old pre zBrush way of modeling. not that I don't still box model and then vector.
a real fast work flow right now is.
Wacom,mudbox ya can place loops where you want with mudbox remesher.
texture with quixel and or allegorithmic.

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Thanks a lot for the spell checker  

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The Artist that will fight for decades to conquer their media.
Even if you never know their name ,your know their Art.
Dark Sphere Mage Vengeance