As an intermediate to advanced player, I use this disc for trick shots and overhead stuff.  Hole 13 at Sedgley Woods is the ravine hole, a nightmare 250' hole over a ravine, completely clogged with trees.  There's a tiny opening way up somewhat to the right of the basket.  I throw a thumber full force into this hole, and the disc usually ends up circle 1, then I spend 10 minutes walking around the ravine helping my buddies find their discs that fluttered short, and after they bogey I take my easy birdie and we move on to 14.

The thumber and tomahawk flight is very predictable, the disc turns from just off vertical to underside up, curving (for RH throw, left for thumber, right for tomahawk), then once it flattens out, it starts to curve back as it falls to the ground.  The old school Z plastic (mine is well pre Drew Gibson release) is tough and it's still massively overstable despite considerable abuse.

For regular FH/BH shots, it behaves exactly as expected, hard turn, slight rise, and then spikes into the ground.  Limited use, but reliable, even into the wind.  I'm going to try it upside down the next time I do some field work, and see how that goes.

Finally, don't think that I'm some awesome DG god in the woods.  The rest of Sedgley usually gives me a lot of trouble.  But I own 13 there - come out and play a round with me and I'll show you the certificate of ownership.