Good extension, has all the gesture functionality that I need although I run into a bit of an issue with opening tabs.

I like all my new tabs to open at the end of the tab row which is achievable by going into about:config and setting browser.tabs.insertRelatedAfterCurrent to false. This opens all tabs at the end of the tab row however for some reason when I open new tab from a link via a mouse gesture it doesn't obey this behaviour and instead opens it next to the current tab.

If there was an option for the behaviour that I want that would be excellent.