After some fiddling around I now have every game emulator, steam, and big box all using xinput mode on the ipac2. Multi mode let’s me switch to keyboard controls for the few games that need it. All and all it works great and from the Ultimarc site:
All firmware except J-PAC now supports the Multi-Mode operation which enables switching to dual game controller mode or dual X-Input mode. Check the Multi-Mode tab on the product pages for more info.
Before upgrading ensure you have the I-PAC shift functionality enabled otherwise mode switching will not work. The default is Start1 being the shift control.
Click here to download all multi-mode firmware versions.
hope that helps