Maybe they may have a floorplan similar to the RT SS Agile, where the Flex Bed would be useful. I'm just wondering if they mean the "Flex Bed" is that the bed flips up to allow for a bicycle or other stuff to be shoved into the van.
What might be a better floorplan would be something like the SS Agile or PW Ascent, but have the bed drop down, similar to how queen beds are done in toy hauler garages. This would allow full use of the back up to the bathroom, as well as plenty of sleeping space. However, in a 20 foot van, placing the bathroom and having it decently usable can be tough. One factor is that Americans tend to be larger than Europeans, so a little cassette toilet that is acceptable there wouldn't cut the mustard here.