I just bought the VX after doing some research and I figured it would be a good interface for songwriting and demoing while traveling. Then I found out
a) you cannot use the guitar input and the microphone at the same time.
b) you can't have the guitar with effects (Mobile POD) run through the VX and into the pc - you can't use the USB and the Lightning port at the same time.
I don't understand why they would even have a Desktop driver for the VX. What purpose does it even serve realy? Anyway, I am returning mine as soon as I get back into town and I will probably buy a Scarlett 2i2 or something like that. Bummer