Whenever I get around to it I will put one together. That was the first one I saw with the hook attachment.

70' of 5 mm, a couple of locking D biners, 15' or so of 1 inch tubular webbing for a swiss seat, and a pouch to carry it in is the basic setup. An ATC (small) or a figure 8 (larger) would be nice if you want a more bulky setup. I don't think I would carry a grigri or other locking descender, but that is just me.

The rope and possibly the biners/descenders would be considered disposable in this instance. Their only purpose is to get me down 5-6 floors in a burning/collapsing hotel with no other route out.

The hard part is finding a suitable anchor. If I were an apartment dweller with reinforced concrete floors, in goes a climbing bolt next to the best egress windows.