Absolutely. I don't mind a recording, as long as it's presented as a recording and anything misleading is disclosed. If you say you're going to demo something, demo it. We have enough erosion of truth in this world already -- don't contribute to it!

I do live demos at work all the time and the best part is that when someone asks "can it frobulate with encapulation?" I can actually press the frobulate button with encapulation enabled and show them. Can't do that with a recording.