[Sirtel]

Personally I would not be interested in any feature like that. I only read fiction on my ereaders where there's no need to flip back and forth. Chapter hopping and searching are enough for me when I do want to look something up.

I imagine skimming would be useful with some nonfiction books, but I almost never read nonfiction in book form; I prefer web articles and magazines for nonfiction and I read those on paper/laptop/tablet/phone, not on my Kobos.