My uncle has a 43 foot 2013 tiffen allegro with the full length motorized awning which extends straight out about 4 feet level and then tilts for the rest of the length. He can't use it in the rain be...
My carefree electric awning works fine. It's adjustable, sheds water in the rain and no issues.
I guess on a unit with a large campside slide engineering has yet to come up with a good solution for an awning that will clear the slide and shed water. Sort of a pain if you ask me. I mean what are you supposed to do every time it rains and all your stuff on your patio gets wet? Chairs, grill, bikes, and heaven forbid you have a radio or want to put lights on your awning.