I've seen them stiff and floppy, they're just as diverse as normal DX Rocs.
Very very flat top though, due to the "ching" stamping method. Ching came up with the method we use today to do multicolor hotstamps (pictures, drawings, ect.) and with DX plastic, it heats it up so much that the stamps flatten it like all hell. Ching Rocs are money for headwinds, I dont have too much experience with them though, but a buddy finally got a icebowl ching roc after seeing me with all mine for so long, and he loves it, 2 aces on it, 5+ fairway aces.