Pika and I saw them today at an in-store live in Nagoya. It was short, only 30 minutes. They just sang the two songs featured on the single, Nanami taking requests for her mad saxophone skills, some talking, and a game where you didn't win anything. I didn't see much as I was located in the back of the reserved space as I didn't buy a single.
But, the songs are great. "Doo Datte Ii no" is really great. Makes you want to get up and dance swing.