So, with the motivation to reduce the amount of gear to schlep on travel and vacations, I started wondering about ways to reduce the amount of camera stuff to carry. I like to switch between the Olympus 9-18 for general shooting and the Panasonic 8/3.5 FE for CFWA/WA stuff. Problem is, they require two different ports. But since Nauticam makes these nifty extension rings, I was wondering if anyone has tried the 4.33" dome, maybe with a 20 or 30mm extension ring, with the 9-18. Or will the curvat