I must admit the Jetcat with 24oz/min of fuel flow per min at full power (55lbs thrust)and a TBO of only 25 hours has little appeal. There are several engines developed for the UAV market that beat those figures by a very long way.
A similar engine that is only 1kg heavier from AMT develops 88lbs of thrust rather than 55lbs. However sea level fuel increases to 39.5oz per minute, that drops greatly with altitude. TBO is 50hrs.
MicroJet is the engine of choice for serious UAV operators, a 17.5 lb engine will produce 200 lbs of thrust for the same fuel flow as two Jetcat engines producing 110lbs of thrust with a TBO of around 200 hrs.
Not aviation but funny (and jet powered):