I think this is a very good design, as it allows very high altitude operation while still having a sensible takeoff and landing plan.
Personally I prefer The Pyramid, as the rotary power transfer makes even less of the machinery airborne and what is airborne is this much simpler.
The two designs have a few similarities IMHO. Bladetips though is the only of these two that can attain very high altitude
Facebook page was updated 2016 though, web page is gone.
This is the last copy of their web page from wayback machine
https://web.archive.org/web/20191228164348/http://bladetipsenergy.com/