I just did a bit of math.
Let's say Windows takes a full minute to boot up without hybrid boot (I have systems that boot up in 20 seconds, but I have good hardware, so I'm being conservative).
Now let's say that if everything is working properly you save 30 seconds off that time by having hybrid/fast bootup enabled. Further, let's say that you boot up Windows twice a day on average.
The net gain is that you would save a minute a day waiting on Windows to start. Good stuff, right? Time is precious.
But let's consider: If you use power saving states...
On a typical system, something WILL fail more often if Windows is not freshly booted, especially on portable systems more likely to be using power saving states. This is based on observed reality.
Let's say you get one more failure every two weeks, and it costs you 15 minutes to recover, redo your work lost during the crash or whatever. You've just chewed up your time advantage.
We can even postulate that every few months you'll have a major failure and lose hours of work. Even a perfectly good backup takes time to restore.
At some point, because drivers - where many of the problems following power state transitions lie - work at a low level, Windows may corrupt itself, and you'll have to spend time doing a fresh install. I shudder to think of the time to redo the setup of everything again. I have written a soup-to-nuts book that I follow when I need to set up a new system, and it still takes me the better part of a day to create a fully functional system. Unless you've been careful to save all your license info, and write everything down about what you've configured, I'll wager there will be things you've done that you will not remember how to do again.
So tell me again... Why do you want to use a half-baked feature that Marketing dreamed up so that Microsoft could say SOMETHING about Windows 8 was better than its predecessors?