Instead of adding this to the Wii2HDMI thread, I figured I'd start a new one. I'm still not fully happy with the output quality of my Wii2HDMI due to the interference, but I tried it out in combination with my mClassic, and I'm rather impressed with the improvements. Below you can see the same scene with the mClassic in pass-through mode (off) vs. on. Hopefully this comes through with downscaled images.
Edit: In case it needs mentioning, the vertical lines you can see in the images are from the interference I'm talking about. I'm hoping to tune this out some more, but I may have to just go back to component cables until I'm comfortable trying to get a MakeMHz piece to install.