I bought the DimSport model, but only because I can tune it with the RapidBike software.
The Rapidbike Dimsport QS does work with the RB evo. In fact I think I have one I would sell. It came off my 821 hyper with RB evo tuner.
It is up shift only. The only one that does up n down is IRC last time I checked but it's been 2 years since I did the deep dive into what's good /bad/ ok. I switched from RB QS to Cordona stand alone set up.