I'm going to need a to-do list for that.That's what I meant about affecting the tactical options. The weapon may affect the priorities for both you and the attacker. However the underlying skill set for achieving those priorities is the same.
BTW - the attacker may be more focused on disarming you than bashing your head in, but you can't afford to assume that. In the situation you describe, you need to protect yourself from being hit and protect yourself from being disarmed and potentially prevent the attacker from deploying his own weapon and escape the controlled position and get to your feet.