Any other tailcaps use a momentary switch similar to the SF "A.I." tailcap?

For anyone not familiar with it, the A.I. tailcap uses a momentary switch similar to what you'd find behind the buttons in a car stereo and the actual switching is handled by a driver board inside the tailcap. The A.I. switch has a low mode and strobe built-in but I'd really like to find something similar that is a simple on-off switch that uses the same type of momentary switch and electronics. If it was packaged in such a way as to be easily retrofitted into existing tailcaps, that would be even better.

Does such a thing exist?

Thanks,

Tony