I read everything through tGS. I pre-ordered ToM. It sat on my shelf for a few months. I got kind of bored one day, went to the WoT forum and read some spoilers. At that point, I kind of lost motivation to read the whole book and skimmed though it. Then, I pre-ordered aMoL. When it arrived, I tried to read it, but I mostly skimmed through the endless battle scenes and only read like the last chapter and a half or something. I think I was kind of turned off by how the series went south and became almost completely predictable, not to mentioned how some Jordanesque characters were botched by Sanderson (from reading tGS), among a number of other issues in tGS.

Maybe someday I'll read the books entirely, but it not on my to-do list now.