I’ve seen that combo in a handful of departments and, of course, FDNY (Rescue Co.s & other companies where the members add the mechanicals)....I gotta say, I’m not a fan cuz hearing the real one next to the EQ2B because it sounds repetitive and it makes me dislike the electronic version more, while I can “stand” the EQ2B a little more when it’s by itself lol. I personally like Yelp & Powercall going with the Mechanical Q most