It is heavy for its size - the cooking area 'one-pan-at-time'.
I've lookad at them, and thought about making a copy, in the same size as the tentipi firebox (20x30 cm). The 2.5 kg for the HD version is right out for me.
Having said all that. It works, its robust..and does not rust unlike those aweful tentipi fireboxes (also which I have and now don't use either) and if converted into something with a chimney / stove is 100times cheaper than some other kata/tipi stoves....
What -- part from the rusting -- don't you like about the tentipi design? I've used mine extensively, and as I see it:
Pro:
* space for 2-3 pots,
* packs easilly in a side-pocket if one want that
* the side legs allows it to "float" on snow (if you use two sticks)
* very fuel efficient and fast (but then all fireboxes are)
Con:
* fiddly, in particular in winter, not sure if it is
more fiddly than other collapsible designs
* rusts
* some warping (which is not unheard of in other designs...)
I think my ideal box would be the yukon, with the tentipi footprint and some sort of stable cross-piece -- similar to the tentipi design, but perhaps implemented as two sideways channels -- in stainless (if I win the lottery: Ti), weighting in at less than 1.5 kg.