Classified Shifting with Di2/eTap: Two ANT+ Shift Sensors

I have a Classified PowerShift that pairs to the EDGE unit as an ANT+ Shift sensor. This is fine on a mechanical setup, but moving to a Di2 setup means I'm unable to pair both the Di2 group AND the PowerShift at the same time. 

Pairing to both of these is important not only for gearing information on screen, it's essential when using the Classified PowerShift to know what gear/mode you're in and for battery status. 

Garmin - Can I please flag this as a something to be looked into as PowerShift adoption becomes more prevalent.