If you’re on an efficient squad it saves minimal time. People spend a lot of time fiddlef*ing with gear so unless they’re literally shooting the same equipment and have 10 magazines already out and prepped, it’s just as fast to have the next shooter step into the box and stage their crap while everyone is painting and be ready to unzip their bag or unholster their gun at the “make ready”.
I never (hardly ever, sometimes with insane weather) shoot like that because that’s not how we shoot matches that matter. So assuming the whole squad isn’t disabled or slower than the DMV in Zootopia, you can save even more time by making sure people on your squad knows who is going when and making sure they’re ready when they’re up and you’re painting as soon as the range is clear.