I like the extension conceptually a lot.
However I think the current usability is not good enough for day to day use. I would like to be able to define Container types for URL patterns in order to just click on a bookmark and rely on that it is opened in the desired container type.
In addition I think the link clicking behaviour should be configurable or selectable by right click. I may not want that a link is opened in the same container type.
All in all a great feature with a lot of potential!