Yep— wear it concealed under long sleeve shirt with the forearm scabbard. Triangular blade— razor sharp- a stab wound does NOT close up— the “stuck pig” effect.
Fairbain and Sykes were police in Shanghai in the Imperial police. Knew ‘rough’ fighting situations in many a dark alley.
I read an interesting article about Fairbairne. He trained the British Commandos. Some knowledgeable people considered him the best there was in hand to hand fighting.
One of the Commandos said when Fairbairne’s shirt was off, you could see that his body was covered in scars. Event he best gets cut.