I've had the exhaust for a few weeks now, it sounds so much better than stock! Here's a video:
I hope this can tide you over until Dinan puts a video out! I have little experience in the best way to record this, and I also live in a large city, so there aren't many opportunities to let it wide open for more than a few seconds at a time.
My X1 is a 2018 M-Sport. As you can tell from the first clip, only one of the pipes is open. In the driving clips, I am running in sport mode with manual shifting via the paddles.
I personally prefer the factory actuator- it's quiet when I've got the family in tow but can be mean when I throw it into sport mode. Curious to see what you guys think- I'm a fan. Happy that I was able to get my car to Dinan to try it out!