Very well made and sturdy. Shocking how heavy they are. I got the bunk bed style to save floor space in our Big Horn 3. But, they are overkill for most applications and a pain to put together.
I think they would work well in something like a wall tent with vertical walls. I had grand visions of setting one up for camping in my ice fishing pop up and save a lot of floor space. I set it up and found I had to move it closer to the center in order for the top if it to fit, which actually took up more space. They also weigh a freaking ton.