This is not trustless by definition. You have to trust ShapeShift. They are "holding" your portfolio assets for you... or are they? You can't hold bitcoin in a smart contract on ethereum. ShapeShift is just promising to pay you back when you close your fund. What if they don't have enough resources on hand? what if they go out of business? Too much risk for me. The fact that they would bill this as "trustless" shows how dishonest they are.