Got a Q: is it generally a slowish process to send money from the kind of offline wallet described in the OP? I've read people talking about the bitcoin client syncing something and that taking many hours. I'm not too savvy in this field...

I try to keep my coins liquid, I want to be able to sell them fast. If I deposit coin to an offline wallet using the live-CD/USB-method, does it generally slow down the flow of my BTC?

If yes, then am I correct when thinking that setting up a whole computer never connected to internet would be a better option? Meaning, having the bitcoin client installed all the time?

Thanks. Still quite baffled by this security aspect.