Interesting. I've heard about this sort of thing.
If the slow release is well-controlled (you'd have to understand the environmental conditions well to get proper timings for a certain area; but there are studies out there about slow-release strategies, and though a relatively new strategy the past few decades, it's been proven), it would in theory be a good solution for low-input lawns. Of course, the person using it might want to go slightly lighter in Spring and heavier in late Summer/early Fall with Cool Season grass types. At 2.3 lbs/K N rate, it's still putting down a decent pinch of quick release N. If you put it down in mid August, in the cool-season regions of the Northeast/upper mid-Atlantic or Midwest, you had better pray for enough rain after that point.
My thoughts: This could be an awesome solution for your average person in the Northeast with a mostly Fine Fescue lawn, who waters only occasionally, and only uses 1-2 lbs of N per year per thousand square feet...maybe half label rate in April or May, and then again in August.
I would assume that PCSCU would be better (more controlled release) for this use than the PCU they use...but also more expensive.
In any case, we don't have Menards in this part of the country.