I have one
I like my topper (canopy, cap, shell, camper, or whatever you call it in your locale) but not all the time.
I really like my tool box and decided I wanted to try a rollup cover to go with it.
I got the Access toolbox edition and have never looked back. I had to wait a long time and pay a bit more money than local shops sell the regular Access cover, but it was worth every nickel and every minute.
Truck-Hyde sells a comparable unit to Access. However, you see 10 Access (Lite-Rider) covers for every Truck-Hyde (Truxedo) around here.