Radds 1.5, AD8495, Dual extrusion

I'm switching from ramps running marlin to a RADDS 1.5 board and using two thermocouples connected to AD8495 boards.  It looks like there is only a single ADC pin on the RADDS board for connecting a thermocouple, and from the other discussions I've seen the thermistor pins on the RADDS board won't work with the AD8495 boards.  Is there a way to use two thermocouples with the RADDS board, or do I need to replace at least one with a standard thermistor (and not be able to print hi-temp materials with the second extruder)