One of my favorite things about the Regular Cab is that I can turn around and see so much more than in any other car I've driven, so the Aerolid would be more appealing to me, and I would imagine to others, if it restricted visibility less.
Pickup trucks tend to have large mirrors. Using them well is skill acquistion consisting first of proper posture, and second of proper mirror adjustment. Seeing through the back glass is optional, at best
if one has serious need of a pickup truck. With a set of
Multivex aspherical overlays on the outside mirrors, turning one's head becomes the dangerous maneuver. I had them on my last truck and they were a revelation.
Visibility
through a cap (or any load, especially a tall trailer) is irrelevant to pickup ownership.
One should train to be able to back into any space with the solo truck using only the outside mirrors. Practice.
.