Many people (including myself), have been speculating that the idea of marketplaces with any kind of centralized escrow system is facing impending collapse. A shift toward multisig transactions and decentralization is quickly fracturing the market landscape. I've seen a number of posts discussing 3-party multisig that incorporates some form of neutral escrow service that functions as the "third man".
Here's my question: The Electrum Bitcoin client also offers a 2-party option for multisig transactions. The vendor would provide their key immediately, and the buyer would submit their key after the product is delivered. Any thoughts about whether this would be more feasible to implement than 3-party multisig?