Sorry I can't comment much on the comparison of the content to Monsters: A Field Guide, since I mostly run RM. I only bought Bestiary since it was on sale and it had some cool stuff about planes of existence (although I also like the adventure notes on all the creatures), which apparently doesn't interest you that much anyway. In this book, those are treated as examples.
However, for the meta questions I can comment:
The current version does not have clickable indexes nor bookmarks, though it has a regular table of contents. Perhaps this will be added later. Unfortunately it appears that the section titles are not searchable, though all the descriptive text and the chapter titles are.