Well, no good reason. I was already in PS and I like using the Schewe mulitpass sharpening and output sharpening. So figuring why not go ahead a print from there?
In the two printed images, the difference in the sharpening is negligible, though the one from PS has no halos, the Lr image has teeny-tiny, totally acceptable, halos right along some of the bright/dark transitions.
BTW, I went back this evening and double checked my settings in both programs, just to see if I'd had "duh" moment and used the wrong .icc. I had not and the settings in PS were correct for PS control of the printer. Color settings in PS were normal as well.