I like it, but there are few issues I encounter:
1. doesn't play well with multi-account containers, so my tabs forget which container they were opened in.
2. Clicking the onetab button is a very bad UX. It should take me to onetab or open a menu rather than converting all my tabs and taking me a while to restore the mess it made (see 1).
3. Right clicking to get through several layers of menus to convert a single tab is a bad UX. Please give the option to right click on the tab itself to convert just that tab.