I've used this look and only this look on my only character for the past three or so years. The inspiration is just how the Order of Whispers might dress up an engineer given they're an Elonan sect of spies and confidantes, secret protectors against an old god.
I didn't pay too much attention to how the Order dresses in GW2, just looking at their GW1 gear, and then used the colour scheme on a uniform that still brandished ceremonial knives but stayed out of the way for technician work.
Sometimes I pull out the scarf too, but it hides too much of the work on the shoulders. It's good to leave it exposed.
Would like to see more screens in the future. Not sure if that rose is working with the pop of different red hues and the green hue. But otherwise, I like the mix.