Lots of recent UFB cabling I've seen in Auckland seems to be overhead. Seems to be that it'll be deployed in mostly the same way the power cabling already is, on the same poles. I'm 100% ok with more cables on the poles if it means UFB is deployed faster.
That said, there's also a lot of it underground too. For example down a main roads, the fibre seems to often be underground. The fibre feeding the residential streets streets perpendicular to the main road have the cables and small FATs attached to the power poles.
In areas where the utilities are already underground this doesn't seem to change with UFB.
WRT UFF areas, I've seen this in Hamilton and New Plymouth. Thicker cables, and bigger FATS up on power poles. Again, no issue from me.