For bent lamination work a UF glue like Cascamite has definite advantages over PVA. You can tint Cascamite by adding earth pigments, but in my experience it's not really worth the trouble. It's true that PVA gives a slightly better glue line than UF or epoxy, but if you cramp the job up tight and make sure all the mating surfaces are true and clean, then Cascamite (or any UF glue for that matter) offers the best overall solution for bent laminations, don't forget the much longer open time of Cascamite is also useful.
For flat laminations that won't be exposed to exterior conditions the equation changes, and PVA is back in consideration, for me it would then come down to how much open time you need.
Good luck!