You're right, the description doesn't really fit the version with "Blue Switches". The "Blue Switches" trigger a noticeable and audible click, the "Brown Switches" do not. Thank you very much for your comment! We have forwarded it internally so that the description can be adjusted promptly.
Illustrations of keyboards are usually just as the name implies an illustration from the manufacturer to showcase the product, so they dont have to make pictures of every different language layout. But yes, Digitec does offer this keyboard in the US layout -> Das Keyboard 4 Professional (USB, US, Kabel, MX-Brown)
Unfortunately, we do not have any personal user experience with this keyboard, but I am happy to forward your question to the Community, maybe someone can answer your question.😊
US layout: https://static.digitecgalaxus.ch/Files/4/9/0/2/8/5/0/daskeyboard-4-professional-front-view.jpg
DE layout: https://static.digitecgalaxus.ch/Files/4/9/0/2/6/9/7/21498_1__GATA_576_2g.jpg
Unfortunately, I don't know the keyboard of an iMac. More information about the MX keys: https://www.cherrymx.de/produkte/mx-brown.html or also here: https://www.daskeyboard.com/de/daskeyboard-4-professional/
The product is sold out at the moment and we don't have any informations about a restocking. Due to that a order can not be placed. I highly apologize this inconvenience.