How to slot yourself into the Horizon photo

Horizon Perfekt is a great camera. But the camera do not have self timer, so when there is no body around, how you want to take self portrait with horizon perfekt? You go out with friends, then want to take group photo, how you slot yourself into the group?

Horizon Perfekt do have slow shutter, 1/2 seconds. I got the idea, set up tripod, the lens swing from left to right, after everything get done, fire the shutter and run to the right side of camera and pose. Can this work?

Where am I?
Lomography Horizon Perfekt, Lomography X-pro Slide 200