It would be nice to know what size device generates what amount of power.

That's a clever idea, hopefully it makes enough power to be worthwhile.

Fascinating concept but some of us can't stand the sound of fluttering blinds. It would drive me nuts. Hopefully, they've got a work-around. Can't really tell from the vid as it's another one with music as the sound track.

Magnetic induction (inducing an electric current) produces a resistance to movement. So while this device may produce current in a low wind situation there is likely to be little produced.

You can still spin a turbine under 9 MPH you just can't spin one that makes very much power. You could probably power a couple LED's with this maybe but it's doubtful that it produces very much power. Wind power requires being built to full (industrial) scale before it makes any sense. This has held true for so long against so many designs that the burden of proof is on anyone making a micro turbine.

Given that greatest displacement of the vanes occurs towards the middle of their length, would it not be more efficient to have the induction coils and magnet pipe located there instead of at an end.

There have long been 'new turbines' touted as 'capturing the energy in light winds'. The problem is that light winds just don't have much energy to capture. This latest device would certainly work for powering a really low power load, but is it going to be cheaper overall than a small solar panel or even disposable batteries? My guess is 'no'. It doesn't look like it has any protection from strong winds either, so figure replacement costs into that.

It would help to know how much noise it makes (too).

looks scaleable. artistic even.

Was tried before several times, including by Humdinger Wind, now defunct by the look of it. These are too large, inefficient and expensive per watt generated, just not worth the effort. Solar panels are always simpler, cheaper more reliable and produce more energy per unit cost than small wind machines, regardless of design.