I know in my area when working games with a running clock (MAYB, YMCA specifically), most officials aren't keen to switching after every single foul call because we are usually doing anywhere from 5-9 games that particular day. I am torn with this, I think it looks really lazy when you call a foul and report it from the baseline, which seems to happen a lot in this type of ball. I try to switch in these type of games whenever possible.
Keep in mind, you're not going to necessarily switch on every single foul call, most of the switches occur when the lead calls a foul (I'm talking 2 man mechanics here). After all, it would be kind of senseless to call a foul from trail and then switch to lead, especially since as the trail you are already near the reporting area.
The one question I do have for you all, and I think it's a new NFHS mechanic as of last year, is the long switching on fouls going the other way. In the past, if a lead called a team control foul, he would just simply step out a few steps, report the foul, and go administer the throw-in, saving steps for all officials. Now they want us to switch on those fouls, meaning the lead has to run all the way to the other side of the court? I'm not too sure I like that, nor do most of the officials in my association. What say you?