My two pence worth is that, though I rarely use page search, I loathe the slider with a passion. The response time is too slow and inaccurate to be useful, even with the finger-rolling technique. If I can remember a reasonably unusual word nearby I will search on that, but I would far rather have the option to enter a page number.
I do confess, though, that I don't use bookmarks - it may sound silly, but the dog-ear symbol upsets me since I would never do that to a real book ...
