Cure time is always a problem with Waterlox and similar oil/varnish finishes. I use it at times because I like the color that is imparted to some woods by the oils and varnish. It is also more acid resistent than most other finishes, making it a more durable finish for those whose body chemistry will eat off almost anything we can put on a pen.
It is a slightly harder finish than Deft Lacquer. The problem is that it has neither the hardness, gloss, or durability of a CA or Enduro finish, and neither of them require waiting a month before assembling the pen.
I use a soaking application of the Waterlox. I sand the wood to 12,000 Micro-Mesh, and then submurge them in a jar of the finish for 2 or 3 hours. They are then removed from the bath, the excess wiped away, and then they are set aside for at least 2-weeks in warm weather. After that they can be buffed with a white diamond wheel. Total time isn't very long, but there is the wait, and that can be 4 to 6 weeks or more in the winter. I don't plug the ends of the brass tubes, and clean them out at assembly with a bronze rifle bore brush.