500e, if you look at most, if not all manufacturers, they use their customers as the final testing ground for their machines and kits that are fitted to them. I'm not just talking about Rotary either, fixed wing are also guilty. It is a crappy way of doing it, but unfortunately, the Customers are the only ones who really can test the system to it's full extent.
Talking ot some of the guys at Era, they have had issues with parts availability, but it sounds like parts replacemetns and even upgrades when improved parts come out, are all being covered by Agusta.
Someone correct me if I am wrong, that is just what I hear from the good folks up at Deadhorse.
Pesonally, I think the FIPS is a bit of a waste of time, money and payload. Deicing a helicopter is just too complex. There is no simple way of doing it like fixed wing with hot air and the like. Keep It Simple Stoopid!!!