To be honest I'm not sure if there is a difference between the SIP Vape ignition and the Overrev version, they look the same. Although I think that the Overrev version was a lot more expensive before sIP started selling theirs.
Anyway, it's advertised here at the KR Automation site in Germany. You can't actually see the switches in this picture. They do supply an extra box (on the right) that doesn't come with the SIP version - no explanation what it is.
KR Automation wrote:
- 16 different ignition curves, switchable via 4x microswitches on the CDI
Oh and the price here doesn't include the backing plate which is an extra 40-odd euros.