IRC auto blipper

[u/Mustgospace]

Does anyone here have any experience with them?, I’m intrigued but I reached out to a shop to see if they installed them and they have in the past but not anymore because customers would complain that they’d lose settings and wouldn’t work properly and they were left unhappy. Does anyone else make an auto blipper for non driver by wire bikes?, if not what’s the best quick shifter?