I received my Sunsets from lowprokb.ca last night and managed to install them in my ZSA Voyager today.
First impressions… these switches are LOVELY to type on. The original browns I ordered with my Voyager felt heavy, and tiring after longer sessions - not to knock on Browns, everyone has a different experience… but I am very happy with my purchase.
Unscientifically, I would say they are quieter. To my mind they require less activation force and thus are much “faster” to type on; I bottom out less. YMMV, but I will say from real-world use they are still pretty loud when you’re in a meeting room capturing notes and transcribing. I’m planning to order the new Sunrise and Twilight switches when they become available as my Voyager is a joy to type on and very travel-friendly.