1. If I took Kendo would I be able to defend myself without my sword?

...Throughout the study and practice of kendo you will not necessarily train in simulated situations that mimic a self-defense scenario, such as exchanges of punches and kicks, grappling, or other defenses against armed or unarmed assailants, etc., as would be more common in other martial arts. Exceptionally a particular teacher may present the art within urban defense parameters but it is not the rule.
...However, serious dedication to kendo should provide you with better control of your body, mobility, dodging and displacement, as well as a greater management of the distance with your adversary. As well, focus and concentration, development of timing, reflexes, reaction, willpower and the ability to make quick decisions, peripheral vision, intuition and reading of your opponent's body language and intentions will be discovered and improved. Most importantly, the ability to stay calm, assess the situation appropriately and take action when only necessary will be the greatest gift of your training. Indeed, all of these will form tools of your arsenal that can be applied in the event of a self-defense situation, with or without a shinai (bamboo sword).