I have about 2oo hours in Janus A. I can't speak for other versions. All I can say is: It is perfectly safe, but it does not have pleasant handling qualities.

The ailerons are light and effective, the rudder heavy and takes an eternity and the elevator is super sensitive. Sometimes, the flying tail stalls while thermaling, making the nose pitch down. This can be alleviated by quickly relaxing back pressure and when you feel (you can feel it) the tail "unstalled", you then resume the stick position as before, otherwise you'll pick up speed quickly.

These characteristics are true at any flap setting. Thermals pretty well with positive flap and lands well too.

You just can not be ham fisted on the stick, it must be precise and quick, while horse kicking the rudder pedals.

Don't know why they installed the drogue shoot. With full flaps and spoilers it's pretty good already. I did land once on flaps 0. don't. It'll float forever.

Despite all this, I had a lot of fun with it.