Have been thinking about paint too. 2 pack is, as has been implied, not easy or cheap to use safely. It does have advantages in ease of application (lets forget the extraction issues for a moment) and certainly in durability. I've had good results with no trouble, as a novice sprayer.
HMG paint co advertises a non-isocyanate hardened 2 pack, Nisocoat, and I'd like to hear from anyone who has used it. In principle it offers the advantages and is simpler and safer to use, being apparently significantly less toxic.
Anyone tried it?