I tried combining WiinUPro with Pinnacle and it SORT OF works. First of all, it doesn't work with every game, and it doesn't always work correctly....
For example, with BioShock Infinite, it works fine in-game but in any menu it's constantly scrolling up. It makes any menu unusable. In game there aren't any problems, like walking forward.
I also can't seem to get x360ce to work, either. It keeps telling me it can't start because MSVCP110.dll is missing, although I've installed both the x64 and x86 versions, and I have all the other requirements installed, too.
I got vJoy working, so at the moment my controller works fine in Dolphin and PCSX2 but that's about it. :/