Are you doing a Templar serjeant, or Hospitalier? I ask because w/the Templars, you didn't have to have the cross on the cloak/cape, just on the tunic/surcoat so you could go with an all-black cape, or have one made. There are a number of e-tailers on eBay that do some really nice stuff...of course, if you have a little more money to play with, there are more upscale tailors you could work with. On eBay, there is a vendor called House Morningstar- this woman makes all of the surcoats herself, she made the one I'm wearing in my avatar. She could do a matching cloak for you I'd think.