Cas Anvar (Alex) did a podcast with some people who had only watched the first 2 episodes I think - who seemed like non-book readers - and he went on about how he and his 3 crew-mates got on really well. Oops.

I've read the book a couple of years ago and have still watched every episode at least 2 times to try catch everything that's said or gestured. When it starts coming together it'll be worth it if you've invested yourself.