Personally, I would not speak at this conference. I like my Takahashi slides, and I do like to reuse them when overlap is unlikely (a talk in Minneapolis, and then one in Oslo). Reuse means I get to make it iteratively better each time; I usually "test" my slides in front of a small group before I present in front of a big group. Someone has to deal with Rev. A, but not everyone.
With the method this conference requires, it's always revision A... so I hope you practice a lot before your talk, and I hope your dog gives you good feedback. I have given some good impromptu talks, but those tend to be entertaining rather than technical. If someone is paying to go to a conference, breadth of subject matter is probably better than watching me make fun of my hair.
IMHO.