Nice Mac.
I have an OrionV1 which I modded the mechanical switch to work better. It is a rigged job, but it works well with just a squeeze and fires more reliably then my other bottom button mods. When I got my Zenesis, I decided to open my Orion up some to loosen the draw to make it more similar. 1.5mm wick air hole and 2.5mm on the mouth piece. It does about the same as the Zenesis, but I actually get better flavor. Not sure why, but maybe because the atty chamber is smaller??? I still want to open the mouthpiece up a little more.
I still want to mod the chamber to a center post and ground screw... mine still has electrodes that are covered with lead free solder. They work fine as long as you use a lot of tension when wrapping around them...