No, not directed at you. Just a general comment since there was discussion of S2's as rear dust ambers. Dig your setup, and appreciate that you posted up, as i didn't realized BD made a flush squadron. As you mentioned a great upgrade for the flush dually or knockoff guys.
Similar setup, flush mounts in bumper for added backup lighting daily, and higher mounted squadron. Run the amber cover to allow for the option of more clear rear light if needed. Been meaning to pickup some amber lenses for the s2's to swap in for runs.
I think the s2's do work well for that purpose, but on higher speed runs I was just noting the squadron, even the lower (cheaper too
) sport model squadrons are a bit more helpful to those behind you.
I'm a semi broken record on the topic, but seeing the rear ambers of the next guy in the dust gives me that much more peace of mind on runs. Really cant go wrong with the BD stuff, all top quality pieces and tons of light