As a counterpoint, I used a DK1 and I thought it was brilliant. Can't wait to use a production model. I also showed it to an architect friend of mine and he loved it and wants to use it to walk his clients around unrealized house designs.
My company, InsiteVR, makes it easy for architects to take their 3D models and deploy a VR walkthrough that they can use for design reviews or client presentations. No coding experience required, just a 3D model.
here's a cool example of one of our customers using our software: a cool case study: www.interiorarchitects.com/blog/the-future-of-architectural-renderings-at-ia-is-in-virtual-reality/