If you were going to do it anyway, why'd you ask the question?
You of course are free to do what you like. Papering does little to strengthen fins. Papering doesn't last, and to do paper to where it looks good, one has to put about the same labor into the project as one would the traditional way of filling/ sanding/repeat. Go ahead and time yourself. I think you'll find I'm right. If you don't care, well, good luck!

Allen