NURBs modelling was taught as a defunct method of modelling up until this semester, for me.
It is definitely a tricky way to model, and seen as I am not a modeller and never used NURBs before now, I have chosen an object (lamp post from the Nethergate) which has a variety of 'simple' shapes, which is still mind-bloggling at this point in time to recreate. Things considered simple, such as having closed-up edges and creating bevels or adding geometry, are like quests across the antarctic for me at the moment (hyperbole, like).
After years of modelling solely with polygons, it is a bit like re-inventing bread.
The curves can create a very realistic or imperfect 'sharp' edge if utilised correctly...
Tools such as boolean, round tool and circular fillet tool cause some problems sometimes, but I have still made progress. There is still some detail to complete and adjust yet...