[tj1673]

I'm not entirely sure of the disc that is actually being used because I have not gotten to see one yet, but, from playing Ultimate Frisbee, I can say that frisbees do NOT fly well upside down (unless you bomb them, which is terribly inaccurate and has poor consistency). Now, I'm not sure how well they would work out of a shooter, but I imagine that even with a consistent machine, they won't fly well upside down.