I have to agree with the comment about handling. Motor gliders like the G-109, Katana Extreme, Sinus or Phoenix are really tail wheel aircraft and handle nothing like a glider during take-off and landing. Another consideration is that side-by-side seating creates a completely different sight picture when turning when compared to centreline seating

This means their use for basic circuit and landing training is limited. At my club we have discussed this and the general consensus is that something like a Super Falke or ASK-14 with centre line wheel is probably the best option for basic training.

For cross-coutry training, something like the Phoenix would do the job, but having flown a Katana Extreme, I would strike it from the list of candidates since I found it a horrible glider.