I've mulled over this and plan to have a foldback single layer cuff and collar using the selvedge (as its quite fun).
The idea is these would be stitched on the opposite way, so when folded back would match.
Having laid it out on the fabric I see I have plenty (the Kinder Cardigan is quite efficient fabric wise), so I could have it thigh length, knee length or even longer, the thigh length ones tend to get worn more than the coat style though so think I will go with that. It is NOT going to be the BRIDGE piece in SWAKOP though as it doesn't connect to the sage print at all.