So true. It's so easy to accidentally "escape" context in which Vimium works. I still use mouse and standard shortcuts like ctrl+l a lot after each such use one has to deliberately click inside a web page to return to proper context.

A lot of actions like tab switching can be done in vimium but sometimes it's a chore.

Bookmarks CAN be accessed via "o" in Vimium :)You can also use "b" to browse just the bookmarks.