Tried it out today. I spiralized three Russet potatoes into one pie dish and one large sweet potato into another pie dish.
I'm really liking the shape.
I took the sweet potato noodles and shook over them some cinnamon mix from Pampered Chef plus some brown sugar. I massaged the noodles with that mixture and then dotted butter over the top. Covered the dish and put it into the oven. Came out fantastic. I want to try this with apple ribbons. And put roasted sweet potato noodles with caramelized onions on a pizza. Baked sweet potato curly fries. And so forth.
I am able to digest this very, very well. Thrilled.
Here is a picture of the single raw sweet potato, cut into noodles. I think if you're trying to stretch vegetables, this is an amazing way to do it: