"Rain Fade" is a misnomer anyway. More accurately, it should be "big gigantic honking thunderstorm passes right over your house fade".
That's the only time you'll lose satellite signal. And when it happens, it's not a fade, it's like someone threw an off switch. Digital picture goes blocky for a moment and then stops completely.
Honestly, though, in my historical experience, I've had my cable TV service drop out, lose signal, and lose channels more often than I've had DirecTV do any of those things.