OK here's the word after throwing it some more:
Good utility disc. I'm used to throwing an ESP Avenger for this slot, so I'm used to planning some fade into the line I throw. I was off right quite a few times with the Stalker, just trying to adjust. I was turning it a bit more today (I was throwing it harder, and there was a bit more wind). It's still freaky long, and I had quite a few good shots on nice open holes with it.
I threw it quite a few times on shorter holes, and had mixed results. If you make sure you don't put too much hyzer angle on it, it's a nice disc. Too much, and it's sailing off-line.
The way it does that, and the way it flies in general remind me very much of a Z Storm, just longer.
I almost aced with mine today! Threw a nice, shallow hyzer and splashed into the basket, then bounced out because it just had too much juice on it!
It's going to stay in my bag a while, to be sure. I still don't think it will replace my Avenger as my fairway driver, but I think I'll find it VERY useful for placement shots, and long corridors. That said, I didn't throw it on a lot of big hyzers/anhyzers, so I'm still not sure how it fares on those lines.
I threw Wizards before they were cool.