Topeak alien 2 has a small knife.
I have one 8)
question but why dont you just take a knife with you as well as a normal bike multi tool??
I got a small knife i take with me as i find knifes on multi tools to be shite and allways sub standard compared to a single blade built knife.
I got a small anadoised blue one which folds into its-self and is very solid when locked out.