Having bookmarks in one place and passwords management for these bookmarks is quite awkward, why having to split the 2 concepts for cousins subject and maintain manually the job to organise them the same way which is laborious ?

That being said, the suggestion is not about bookmarks management, that's a big work to be done by a bookmark management software such as linkman (http://www.outertech.com/en/bookmark-manager).

The suggestion is to let linkman manage bookmarks but safe in cloud could simply sync bookmarks with linkman.

Or when syncing all bookmarks or even a sub part is not wanted, at least, for common entries between linkman and sic (safe in cloud), give linkman categories/notes of bookmarks to sic entries that are in common (identified by their url).