Well... how about this idea...
Using a VARGO TITANIUM "Ti-Lite" SIERRA CUP into my psk pouch???

Background why i'm asking:
I'm migrating my psk to the medium sized TacTile Pocket from Maxpedition. And basically its going to house my psk, a mini first aid kit, and a heatsheet bivy (the plain version). And basically carry it over the shoulder when I need to. Other times i'll live in whatever pack/bag i'm using at the time.

I think I can squeeze the Sierra cup in there (its the max depth I can have), but will have to play with it. Does anyone know of a cover (plastic, metal, tupperware-like) that will go over the cup (4.5" wide) and be secure? If so, Then I might be able to migrate some psk items into it and use the space more efficiently.

comments?