There is no "just talk" when it comes to making a bet. If you confirm that you really mean it - you mean it.
Matthew Wright got a scammer tag for something similar.
With that said, I wouldn't take any bet as a real thing until escrow was achieved. A person should stick to their word though.
He quoted T.Stuart's post indicating that he accepted the "gentleman's agreement" to send the 1BTC without escrow at the cutoff.
At the very least, he should get a scammer tag, as Matthew did. Otherwise where's the consistency?
https://bitcointalk.org/index.php?topic=178336.msg4376376#msg4376376Though as far as I can tell he's had an extra 24 hours over his originally stated cutoff anyway, so he's quite late paying up

I was one of the people who bet against him , I asked him specifically if he is still taking bets at that moment.
But again , I didn't believe for more than 1 second I would get 1
BTC and that was when I was falling asleep.
But since I was sure from the start he didn't have the resources to take the best , I'll personally let him go if he helps with my project:
https://bitcointalk.org/index.php?topic=405612.msg4394568#msg4394568 
Is doesn't seem like a smart move to take an unsecured bet with someone that you don't believe will pay. If you lost you would have to pay or be labeled a scammer. He has everything to win and nothing to lose. The most you can hope to do is not lose.