Small world, indeed. As you well know how much demand is on a chiller, our large printing presses are outfitted with Penguin water chillers giving us a great deal of reliability. Since I am familiar with the Penguin product line, I was very comfortable selecting their glycol chiller based on their previous track record. Not taking anything at all away from Ss as I have a home brewery full of their top of the line equipment, and I'm sure Ss's Glycol Chiller would be exemplary.
Your point is well taken in that you don't really need a monster sized commercial chiller to run a typical (or even large) home brew setup. Even intermediate presses with big demands may only use 1 hp chillers. Having conversations with our rep at Penguin, the obstacle many small brewers have (like me) is that each fermenter has its own controller and associated pump in the reservoir. When there is no more space to fit in another pump, we have considered hitting capacity. There are ways to build manifolds with solenoids and the like, but this is potentially more advanced than many will choose.
Because my source cooling water (for the IC) is often in the mid 80's during the summer, I will transfer 90F wort to the fermenter and let the glycol chiller take it on down to fermenting temps. The recovery time becomes important with this process, and my 2 gallon reservoir with 33% glycol at 28F will rarely reach 40F when cooling wort in a 14G tank. If anyone wants real world reviews on the Penguin after a year of use, I'd give it a definite thumbs up.
