Yep, check the forum. probably 30% of all ico split after they get there money. escrow just ensures that you get some worthless coins before they split off.
the don't waste the time asking for a stupid escrow, if devs are scam they will scam with escrow or without it, if you see a shady ico just dont invest and get along, dont ask for "escrow", the first ICO here most people are based on and hope their ico investments are like that was Ethereum, and that one didn't even had escrow.. your sin is the greediness that makes you think an escrow will magically turn a scam into something constructive