The new format EC225 Flight Manual (which has just started on general release) shows AHRS switches with guards over them. I have been told that this will become the standard - i.e. future AFCAU will be shipped with guards as a matter of routine. I have no information about timeframe, but I have been assured "it's coming - soon". That said, the latest 225 off the production line does not have guards, so believe it when you see it.