Yes but in the mag for instance it dose not make it an option. It's black and white in the sb for magneto for oh periods. There is not an option.
I tried years ago to get Casa to give me a diffusion of the word "recommended "
They would not.
So now even under shed 5 you have to do shed 5.
I had a win in a court against Casa where they said that sb had to be down when using shed 5. I said it didn't. And it didn't at that time. But now you have too. It's that simple. As a lame we damed if we do and damed if we don't.
And at the end of the day yes it is an extra expense on the owner but you the one with your and your families with there arse in the seats.