Replying to: Stéphane
Adrian: Actually we did want to play with conditional comments, but we ended up not using them as we would still call two CSS’s: ie.css and a generic style.css.
Come to think of it we could also compile a separate, IE-specific CSS. I’ll think about it, thanks for the suggestion (we’re using LESS, so I expect we’ll have to jump through a few loops, but thanks nonetheless).
As per viewport vs. screen size, I’m with you on this point, although in this special instance we don’t have access to this info, it wasn’t recorded (stats tools used were out of the box).