I am one of the early purchasers of 3D Coat (then 3D Brush).
It is brilliant--best value for money 3D paint/displacement paint app ever.
Ngons are a nono allmost everywhere.
The forum reply to questions by Andrew are within hours so if you have a problem/question--ask!
(As often, within hours he will have an updated version of the app to suit your needs!----HEY!, that sounds like a Michael!)