Thank you all for answering - I appreciate your helpful input, great forum here !

"For the longest time, I felt it was just easier to use SubD modeling with polys to get what I wanted. ....
But now I'm pretty much gonna start every project in MoI ... It's just terribly faster starting in MoI ..."

I tend to stick with subD mainly because I am just very at ease with my SubD modeller, but the more
I look at MOi the more i am fascinated how much power is hidden behind its minimalistic surface.

"So, the trick is to eventually think in NURBS. A whole different strategy is required for modeling"

This is the biggest challenge ... having worked for a long time with SubD my brain is programmed to think of
building up a model following a specific workflow - falling into the "SubD - trap again and again ;-)