To add my two cents worth... a dangler sheath is great for the SOD. A nice pouch with an X-loop would be cool too. I done them for the Chopweiler which is about the same size and it worked out well. Here's a pic.
A kydex can be made to fit the bill as well. <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />