Yeah, I've picked up some paperback GNs too. That backfired the other day when I managed to accidentally fold over the cover of my new copy of The Simping Detective in my bag. (I like to put a book in my bag to read on bus journeys and work lunch breaks.) So annoying! I've taken to putting them in the packaging they were delivered in, to prevent this happening.
I'll continue to buy paperbacks though. A Hardback is very nice... but the paperbacks are cheaper. Beside a lot of Rebellion's publications are only available in paperback.