How are you going to disappear with a lot of coins? Please explain this? What are you making a 5 BTC plus bet? I dont think so and in that case sure grab an escrow. What im saying is you dont need to have an escrow for small amounts.
I am very interested in hearing your reasoning on how someone is going to "take off" with a ton of coins? By take off do you mean not pay a bet? because technically speaking that would not be taking off, that would be not paying. The winner of the bet would not have technically lost anything by the other person not sending the losing bet.
Want to know how someone could become greedy and take off with a bunch of coins? Using an escrow, thats how.