Yes, I have. Moreover, when I was exploring the process of falling asleep, I evoked it intentionally. Keeping my mind, I went through the stages: wake → paralysis → soundscapes → visual images → dream. Awakening just goes backwards.
I think it is very interesting, it is a real paralysis, and in such moments you can understand what paralyzed people feel. No matter how great your volition is, you can't move your body even a millimeter. But in my first time it was fearful so more than interesting. Then I was interested in lucid dreaming, but worry about various aspects of this. And once when I hadn't woken enough, I had got a paralysis and began to think that the darkness devours me because I've broken a law of the Sleep Kingdom. There was nothing that could be interesting anymore, I awoke quickly.
Now I find it amusing. But I don't really understand where a problem is. I know the paralysis mustn't spread itself on the muscles responsible for breathing and movement of eyes. If you can't breathe sometimes, probably, it related to your worry, not to the paralysis. So what do you feel in this moments exactly?