Personally, I think that it is a very good training aircraft since the Koliber benifits greatly by being flown 'properly'. Despite being a very forgiving aircraft to fly sloppiness is immediately apparent. Also, as an instructor, I feel able to fly some very nice demos since I can usually slow everything down to make it very easy to follow.
I like the way one can hold the nosewheel off the runway, also real feel is available in the low speed regime. One must 'use your feet' to keep the ball in the middle - but also there is no shortage of controlability.
Stalling at forward CG generally results in no G break but then again, that is the case in the Warrior (et al). As a matter of fact The plus side of that is that students might be encouraged to spend some 'quality time' getting to know and love the stall/low speed/hi alpha regime.
Trimming is essential and easy to teach as well - makes a change!
Good view out - essential for training.
Four seats - handy for observing lessons (a most valuable but underused opporunity when learning)
It's tough, too. Good for thumping into the runway yet living to fight another day.
Any more info required? Hope this helps...