Well I'm probably "exactly" a 35 inseam, but I try to have some stack at the bottom of my jeans cuz I dig the look and also that way they don't rise up to my shin when I sit down.
The DC's are Rodan pants from 08/09 in a large and up next to my shrunk to fit levi's 38L (probably around 36L now after the shrink), the DCs + the powder skirt are about an inch longer than my jeans (from from top of the waist to the cuff).
So yeah, DCs have great length. They'd be even longer if I'd sag em, but I keep the powder skirt up to my belly button. The powder skirts adds about 3 inches from the waist band.