I didn't say it was to everyone's taste, or that it would be normal, BUT, if you've got other issues at hand, with a bit of creative thought about routes and wiring, as a brave design decision it can look v good imho. My lights in my kitchen are actually connected with it at ceiling level because it was going to be a complete ball-ache to try to do it in the ceiling void without wrecking the ceiling. The wife took some convincing but she loves it now. I would have done more to sockets as I knew chasing our old walls was going to lead to plaster falling off, but wasn't brave enough at the time. Now though looking at it I think it would have been fine. My sparks was also into using it and has been doing more and more of it in domestic work. I do think you need to make decision compromises though, such as where you might have sockets spread around a room, you might go for just 1 or 2 places, same with light switches; going 2 or 3 way with switches means there is a lot of cable to run back and forth - so I think going the conduit route is keeping the wiring very simple.
I'm currently in 'stc' limbo, hopefully in a short while I'll be living in 'redecorating heaven' lol.
I'd love to be brave going forward but I just know my (small c) conservativism will get the better of me.