If you do this why bother with the Backline, just go from the RPM. Obviously you are the kind of player who does not consider your amplification chain as part of your "sound". I on the other hand do. I hate going direct and prefer to mic one of my cabinets.
What happens when you roll up to play a gig and find no PA or one only capable of vocals? How do you play that gig. If your band carries its own PA to every gig that's a different matter. How many guitar players would ask the same question you did? I'll answer for you NONE!
Paul
The most gigantic +1 to all of this. I too, consider my amp and cab to be fully half of my instrument.