None of our students so far have had any trouble with the DA42 Twinstar - quite the reverse as they tend to find it easier to fly, manage and operate than the more conventional aeroplanes. In systems are logical and capable and the whole thing has anice, modern feel to it.
This allows them to concentrate on what the IR is REALLY supposed to be about - the IFR work. If they want to fly "conventional" (archaic!) aeroplanes later the differences training is done in a relatively low pressure environment (no CAA staff examiner!).