Fuji
A wet prop would clearly be inadequate and is really not very much help in the sort of conditions that might have been prevailing at the time but Cirrus have never gone the route of offering stand alone prop. protection - it is either full airframe or nothing.
Fuji
A wet prop is of vital importance especially in a low powered aircraft. The loss of thrust in an iced up prop is a major factor in icing accidents.
I may be wrong but I do not believe the Cirrus is approved for flying in icing conditions.
The system is a get you out of trouble addon rather than an approved for icing package offered on the Cirrus.
Pace