I'm in the same boat... does your MSVC work with the standard HTC headset? I had to tweak the registry to make it work. Now it needs a long press on the HTC headsetbutton to kick in. I thought that it should work with every 3,5mm headset. Can you please crosscheck with the original HTC?
I'd like to use the Ultimate Ears Metro.fi 200v or the Shure SE210 with MPA-3C adapter, but MSVC is a must. I couldn't find a local dealer who has this earphones for testing.