If I need to pull a knife I intend to do major harm or it doesn't get pulled.

While pepper and a baton are good defensive weapons its much harder to conceal a baton and a " large" can of pepper spray than a folder. Because of its convenience of carry i am not tempted to leave it at home either. Either way a mulitool doesn't enter my mind for one item EDC.
A multitool of course its better than nothing but a stick is probably better in the self defense dept.

For what its worth.

Flip