I've seen that trigger in conjunction with a slide fire set up. It would rock and roll pretty well. That said, that trigger is a little price when you can get a Timney for a little over 200 bux.
When I spoke with tac con about it, they said it would (likely) not work in the 15-22 because it doesn't have enough blowback.
There were many videos and reviews that showed the trigger wasn't any faster than the hiperfire or geissele sd3g trigger, both of which do work in the 15-22. And are half the price.
GhostMutt's video makes the Geissele SD3G look like the best one IMHO. I run the SSA-E in all my rigs and I couldn't be happier with them. If I was building a spray gun the SD3G or S3G would be in it.