It sounds to me like a great idea. You can still post in the forums. It would likely be something that would open up more discussions in the forum as people expound on conversations that were had via skype at an earlier time.
What would be the downside to having real time poker chat going on? Undoubtedly people would continue to post...most likely while speaking live as well. :top:
As for collusion, it doesn't seem as though anyone here would bring it there. There is nothing wrong with the idea of being able to get real time help with a tough call. A network of people coming together to help each other play a better game is what this place seems to be about. Wouldn't live chat groups only extend that network?
Also, skype is free. What's there to lose in trying it out? Find it's something you don't like, it's certainly one of those easy to remove programs.
Those are my thoughts, and this is my Skype username: FloppyMcOddNuts
Side note: Ventrilo is a far better program for RT chat in my opinion. I do believe you actually have to set up a ventrilo server in order to be able to host with vent, though.