i did my IR on the da42 and now fly an old school turbine with many leavers and dials (no more magenta line or autopilot!) and it did nothing to damage my flying, never had any problems. the way i see it is that the IR is very high pressure, and if you can help yourself with choice of aircraft then why not. plane and simple...........
as other have said, you will require difference training to move aircraft as usual!