If the rope choice you make allows you to make hundreds of dollars a day, is the shaving of a few bucks really worth it? I'm all for saving a buck, but not if it causes me to move about the crown any less swiftly or with ANY complications.
Where you save the money is by not touching the rope with a saw. That's where the costs lie, IMO, because ya gotta shell out to buy another rope to climb on. Care for the rope and give it a good, long climbing life and i'll doubt you think back to the fact that it cost $20 or $30 more than a 3-strand.
Not to derail the derailment, but the thread is about Whatcha Did Today . Do a search on ropes here at AS and you'll get volumes of perspectives, more info than you could hope for, or start a new thread.