I read this passage in my quiet time a couple of days ago. I remember hearing and reading about this story in Sunday School when I was younger. Peter is probably glad he wasn't good at using a sword. When Luke tells this story he also mentions that Jesus healed this man's ear. As I was thinking about this passage this thought struck me:
When the church uses the sword to communicate its message or further its agenda it ends up deafening those who were meant to hear its message.
Just my thoughts.