Many of you've asked for a follow-up video showing the construction of these, so here's how. The only needed skills are to cut rope and tie knots; easy peasy. I've caught a flu, sorry for sounding nasal and slow. No fat cat this time either, but more closeups and image examples. There's more of those (images that is, not cats) at our website; almost all strobe pictures uses the very same softboxes.
The light weight (0.4 kg), fast setup/teardown and compact packing (40 cm), does come with some caveats, however. First, these tripods won't allow the box to be tilted; a minus compared to regular lightstands, but the boxes I use are so soft, I personally don't find it much use to tilt them; always using them straight on, even with normal stands. Might not fit your work though.
Second, the light weight and cord spreaders at the bottom make them less good in wind. I've made a version with rigid spreaders that will cope better, and you could easily add loops for tent pegs at the bottom, but I'd still prefer a regular tripod with ballast outside.
The good thing though is speed, size and weight, which is important for me since I use many small flashes, building larger clusters of small units; a modular approach that gives more flexibility, channels, and if you want, really large and soft light, or quite complex setups. The leg construction also makes it easy to place many stands close to each other; a problem with normal stands. The basics can be found in the first video/blog post.
For me, these lightstands are the perfect fit for small battery flashes; I use 7 units of the Canon 580EX, together with 5 of these lightstands. Flash, box and stand can stay connected during transport for über-quick setup, with the combined package being about the same size as *one* normal stand. No problem fitting 5 flashes/boxes/stands plus camera gear *inside* one large backpack. Try that with studio cans on Manfrottos :-)