I saw this question about a portable sukkah and I immediately thought of those pop-up canopies that you sometimes see at picnics and the like. The canopy has a metal or plastic frame that folds up and a (usually plastic) cover over the top. I've seen ones where the cover can be removed.
This seems like a reasonable basis for a portable sukkah except for one thing: these canopies have a peak in the center (to shed rain). That would make it difficult to have the s'chach level with the ground:
And that made me wonder:
Is the s'chach required to be level?
Or is a sukkah allowed to have a peaked or pointed roof?
Assume, for purposes of this question, kosher supporting materials and a means of attaching s'chach to a slanted frame; I'm just asking about the legality of the shape.
(A similar question arises with a palapa, a temporary structure with a convex roof but does not question the validity of the slanted roof rather the validity of the structure itself if perched in a place that will destroy the succcah e.g sea shore.)