It uses rudder pedals for yaw control but has a single short stick for pitch and roll. From all the pilot reports I've read, the control forces are light and the pilot can fly for hours without fatique. That is engineered into the system by carefully sizing the control surfaces and mechanical ratios between the stick and surfaces. Even the higher performance (345 MPH cruise) Lancair IV-P uses the same system.

Adding rudder to the stick wouldn't necessarily be all that difficult. First, since the primary purpose of the rudder is to allow for coordinated turns, designing the ailerons to minimize adverse yaw would decrease the amount of rudder inputs the pilot needs to make. They could even incorporate a simple interconnect between aileron and rudder like used on the Piper Tripacer so little rudder inputs are needed.