Sorry, but I can't as we are not running Mountain Lion here. Not on personal computers, business computers, nor the studio computers, nor any of the R&D computers.
The differences are small but noticeable when you place a gradient on top of the other. However, if you require consistency and most photographers do - then you would not want to mix them - because you would have different shadow and highlights.
You can do both if you are on MT Lion. You can print directly from LR or print from QTR PrintTool. I want to be the first to call that QTRPT.