Demountable camper group

Has any one used these? Look like a nice way of having some storage even when driving without the tail gate, and using that bit of empty space when the camper is on.

https://www.4x4at.com/toyota-hilux-16-o ... s4QAvD_BwE

Will

No, but I have an Isuzu Single cab with space in front of the arch, in this space I have a built in Leisure battery box for 2x 150 ah batteries .
I had an incident years ago wherby the battery "boiled and gassed" and you can tell me all day long about "modern batteries" blah blah ! still won't be having one inside where I sleep.

B.