This is what I implemented too.
I’m currently set at 45 degrees F, but, may change to 50 to be like what you’ve done.
I live in Dallas area. Not cold enough to warrant a complete shut down for the Winter with pressure blowout of lines effort. But cold enough that indeed grass, shrubs and trees don’t need much water.
Since I operate exclusively on Flex Daily, at 45 degrees, if it’s just for a day or so, the Iro2 catches up the moisture levels for each zone. While no water savings here long run, still, I’m assured of no watering if it’s below freezing.
Coming up is some real cold weather. During this time moisture accumulation levels will ‘bottom out’ and I will see water savings. Especially if I implement 50 versus my current 45 degrees.