And I personally feel that a full power forehand is a bit of a different beast than a controlled, 200' standstill.
armiller can you explain what you mean by this?
It's funny; I've never really thought that much about what I mean by this, though I've been saying it for at least a few years.
It stems from two related but opposite experiences that I think many of us can identify with. On the one hand, some beginners start out throwing 120% using a Boss or Destroyer or Firebird or other disc that needs a lot of arm speed and simultaneously masks tons of form flaws because it's relatively overstable. Those throwers typically have a difficult time throwing a controlled approach with a midrange or putter. On the other hand, some beginners develop a controlled forehand, or maybe had a nice touch forehand from throwing ultimate discs. But then when attempting to throw higher speed drivers it's a bit more of an adjustment. (By the way, I'd say I have observed the first experience more often.)
I can identify with both experiences, and I feel like I actively have to keep both sides of my game alive and well. On the one hand, more controlled, standstill or one-step forehands from 40' to 200' feet using a Polecat, Buzzz, or Teebird are a big part of my game. On the other hand, I throw plenty of forehand drives using Firebirds, Vultures, Undertakers, or Crank/Katana type discs. I used to consistently approach 400', but now I'm most comfortable in the 300'-350' range.
Something about the one-step or standstill controlled forehand allows me to focus almost exclusively on the wrist motion of the forehand. I can control the hyzer angle, nose angle, and release direction quite well, and that makes it useful for hitting all kinds of lines. I'm always throwing these at well under 100% power, and I almost never turn over the disc unless it's part of my intended throw.
It can be a different story when I go for a full power distance throw. I think it's just that trying to put more power into the throw increases the potential for error, whether at the wrist, elbow, shoulder, or spinal axis. In the end, an error in any of these spots can ruin the throw. Maybe the most common result is yanking the disc left (for a right hand forehand), but it's also very possible to throw into the ground, throw nose up, etc.
Both types of throw are important on the course. I think you can get away throwing a serviceable forehand "power drive" without perfecting a proper forehand wrist action, but probably not the more controlled type. This is all my opinion, of course, and maybe I'm alone on some of this.
I will say, I use identical grips for all forehands, whether with a Polecat, Buzzz, Firebird, or Katana. Of course, making it work for different disc shapes can look a bit different, but I have my fingers and wrist oriented the same way for all.