I reversed the controls to test the K13 anyway just so things felt natural for me.
My thoughts:
roll is very slow, much slower than I think it should be.
it has what seems to be a very nose down attitude for level flight but I must find a decent way to set up trim (assuming it works)
I could not spin it at all, even flick rolls were difficult, always seemed to go right despite rudder input.
I could not do a loop without going way into the yellow arc close to Vne, I recall the K13 was easy to loop.
Slip ball seems to give reversed sense indications.