A friend of mine had the clamshell set-up. I drove his truck a few times. The truck was great except for the leaning over the lower gate to get things out of the back. I have back issues and sometimes twisting and pulling something will trigger my sciatica. The panel doors allow me to avoid awkward angles. I like the clamshell style a lot, but, it isn't practical for me. I have a 51 with the clamshell now but had a 53 with panel doors years ago and really liked that set-up.
