My friend's architecture office has Occulus, and everyone, clients and architects love it.
I asked her if anyone experienced any headaches or seasickness but since there is no action happening just a visual walk through buildings it seems side effects are minimized.
So for architecture Occulus fills a nice niche.
My company, InsiteVR, makes it super simple for architects to get from 3D modeling software to VR without the headache of programming a game engine or setting everything up. And we use the GearVR so it's wireless, nice res, and easy to set up.
Shoot me an email at angel[at]insitevr.com - I'd love an introduction to your friend.
Still it creates an incentive for doctors to get a 3D ultrasound system because parents could go elsewhere otherwise.
You can imagine that, once it becomes more mainstream, architects or estate agent with a VR device would get more traffic.
(Better, give me an online estate agent where I can preview the house in VR before going there physically. A few photos are OK but they don't give you a sense of size or volume. And you can't look through the windows to check the view.)
Some of our customers are using it to analyze the impact of re-arranging work spaces or to communicate why design A while more expensive is better than design B. We've been working on and are really excited about using VR to A/B test physical spaces. We do it for websites, why not for the spaces we live in every day?
a cool case study:
www.interiorarchitects.com/blog/the-future-of-architectural-renderings-at-ia-is-in-virtual-reality/
Ditto for plane and car simulators. I'm looking into picking up a headset for playing carsims, but don't think I'll be using it for, say, 3D shooters.
I wonder if this and AR (e.g. Google Glass) are on a similar trajectory. Lots of hype that near to mid-term--call it over the next 10 years or so--ends up mostly as a relatively niche technology for specific commercial use cases.