Very neat Ian! I should have asked Dave to do pockets for my headrests when he fitted my additional zips. I now run my car without headrests and have got use to not having them.
The one mod I have done is add a couple of poppered leather straps so that I can roll the tonneau back to just behind the drivers seat without affecting the seatbelt.
A mod I mean to do is fit a stud just inside the car behind the seat to popper the side part of the tonneau to keep it neat.