Here's a .pdf pattern for a cape-cloak that I sewed a coupla years ago. It keeps me from going numb with cold while piping at gravesides and hoping the minister finishes soon.

It's not an Inverness cape, but sure helps me stay warm. I sewed mine from black fabric with a dark green lining.

Slainte,
steve

www.amtgard-wl.com/library/howtos/how2clok.pdf