I'd have no qualms about carrying $11K in cash from A to B, and if I already had the money in cash at A, I seriously doubt I'd bother to go make a deposit, electronically transfer it, and then withdraw it at B. Far more likely that it would go into my backpack.

This is coming from someone who is very well-served by the banking industry; for someone less well-served, I can even more readily understand it.