Any reason one can't use 4" PVC sewer pipe for dryer exhaust piping?

I've got to go UP 8 feet (which will be metal), then horizontally about 20'
to get to a soffit. For the 20' run I'm considering the sewer pipe (not the
kind with holes) because it's easier to work with.

Goblin roofers didn't replace the roof vent when they put in a new roof, I
didn't notice their failure for a LONG time, and now I'm endeavoring to
correct the problem. I figure a soffit vent is going to be easier than
dealing with a retrofitted roof vent.

Suggestions welcome.