Yes nightly is really fast and I'm really enjoying using it. But the missing extensions (mostly LastPass in my case) is starting to grind, even though a large number of extensions are already ported.
I've reluctantly given up on Tab Groups, but losing VimFX and FireGestures is still causing me pain.
TabGroups was really unique in that it felt (to me) like the kind of interaction-redefining change that tabbed browsing was in the first place. I'm adjusting myself to using virtual desktops and KDEs WM-level tabs to compensate, but I still miss the addon.
