davesdawg3,
You're just jealous 'cause you have zero vertical lift capabilities!

Back to the original topic:
For self-defense purposes, I think you have a distinct advantage when you've trained in a variety of disciplines. I also think it's an advantage when you've had the opportunity to use these skills in your profession (bouncer, military, police officer, etc.). Nobody has the ability to tell you whats going to work best for you when the crap hits the fan; that's something you'll figure out all by your lonesome. The more you see in a training environment, the less you'll be surprised by something on the street. The more realistic your training is to your specific mission, the greater the likelihood of success.
I enjoy point sparring, but it doesn't really help me on the street.
I enjoy boxing, but it alone doesn't help me on the street.
The same can be said for my kickboxing, BJJ, and now, double-stick training.
But, put all those skill sets together and use them in realistic combat scenarios, simulating situations that are most likely to occur in today's society (and in particular, to you!)...Look out!
One particular style of martial arts just doesn't suit me. I'm interested in all of them and I enjoy learning new stuff all the time. If being a hybrid practitioner turned out to not be a good thing...I'd have to be one anyway!
Wayyy more than my 2 cents,
(The Very Hybrid)
Dawg