The port came yesterday. The 15 mm FE with 1,4 extender does fit well, and there is no vignetting with the correct placement of the shade (but it is a close call, just a couple of mm shorter into the port and there would be vignetting). I tried it in the bathtub yesterday, and everything worked well. Really looking forward to trying it in real life in a couple of days, at least if the ash cloud from Iceland leaves northern Europe and the flights south starts again! If this works it will be an amazingly cheap way of getting cfwa. I do not know if the shade is essential, if not it will be an extremely compact set up.