I guess we have different preferences. I've ridden a DayLong saddle on a Royal Star Venture for many thousands of miles, and again on a GL1500 CSC trike, and now on a GL1800 with a RoadSmith kit installed. Three different seats built for the same two butts (me and my wife), and I have not found the seats to be any problem at all on the trikes. In fact, I've heard more complaints from riders of two wheelers who worry about getting their feet down with a DayLong in place. Once you learn how to do it, it's no problem, but the seat is surely not a problem for us on the trikes.
It's a fact that each of us must find out for ourselves what works best for us. Just because someone else or everyone else loves something doesn't mean I'll like it (or will you). I love the support the DayLong provides and the comfort we experience on day long rides. I always recommend sitting on a seat for some time before making a decision about how it will work, but since the DayLong is made for the individual, and individuals are shaped in many different ways, even that is not a really good way to test. Since it's hard to get a chance to ride a seat for three hours or so, it's pretty hard to decide which one to buy. But it's no trouble to tell whether or not you like a seat after riding it for that long!!!