Maybe the more interesting question is:
what sort of technical documents does it make sense to read on a separate device?
As a sidenote, I had a user guide for yu-gi-oh game which I really could have used on my sony reader. full of graphics, regular 8 1/2 by 11.
I tried converting, but that was painful.
I ended up using my laptop when playing with my child, but my youngest was pulling the plug several times and almost caused the laptop to topple over.
Has anyone in the ebook world considered that use case ?