With a tele M I guess I wouldn't need adapter that often, only if I want to use it on the 500mm. Video that might happen, I ordered the Vello.

I also ordered the 55 x 200mm.
Anyone know if there is any other benefit of having the new 18 x 150mm rather than the 55 x 200mm? Image quality? Video?
Will the 55 x 200mm work with the digital IS and video?

Other than the obvious which the 18 x 150mm will arguably give you a more usable every day focal range.
The two are almost the exact same dimensions, the 55-200mm is over an ounce lighter. The 18-150mm gives you .5 stop IS advantage.

FYI the 55 x 200mm is on the way.