Interupter brake lever compatible with hydraulic mechanical disk brakes?
Those brakes are designed for cyclocross which means using STI "brifters" as you no doubt have on your bike.  Interrupter levers are also designed for use with STI levers.  The trio should be perfectly compatible.

One exception to the above would be if you had "mountain" brakes designed for MTB levers.  But that's not the case here.