I’m a big believer in running like hell! I love my bike its my freedom my heart and my soul but if I was in this situation id be gone!!!!! And if I couldn’t go id hand the chap the keys and walk home because I’d rather walk home crying than bleed out on the floor like a pig my dad was a police officer for 38 year and told me about many time when people had weapons (being pipes, iron bars, knifes, guns brass knuckles and chains) and you could not tell. He also told me about a man who once stood his ground and knocked the mugger out, the mugger then cracked his skull on the kerb as he fell and died. The man defending himself ended up in jail for man slaughter as drink had been involved. I’d rather buy the mugger a pint than fight with him.