And another post by me. Sorry, but I'm learning the new Opera version and maybe this can help some people. Pig Toolbox's gestures are still working, but you have to deactivate Wheel Gestures and Super Gestures. Super Drag can stay activated. The gestures do not work in internal pages anymore.
Opera's own mouse gestures also have to be deactivated, but since there are only a handful you are not really losing anything.