having previously designed for properties using SIPs, I have to say that I'm a great SIPs fan.
And, I do like your design. With a little development
these could have legs (sell like hot cakes!). Remember Henry Ford?
Budget homes for all climates - cold or
hot. They could be mass produced and used anywhere from Alaska to the Sahara!
Ikea made a fortune with flat-packs, now is the time for curve-packs, delivered to your door and assembled in minutes/hours.
And Darrel is correct, it's f, f, f, f, freezing here in the UK. Perhaps the cold has got to me?
Have an ice day, in your Igloo.