The thing you have to keep in mind is Marshall is NOT a major manufacture, he isnt having a production run of these build or anything like that. he had the PCBs printed and is assembling everything by hand. expecting there to be a warranty on something like that is like expecting there to be a warranty on a portable. I'm sure he will reply to this question soon enough however.
That passed through my mind. I know he'll assemble stuff by hand, and I suppose he'll try every unit personally to ensure it works; that's an obvious advantage over big manufacturers. In any case, I think it's not unreasonable to expect a small number of units to be defective, either by Marshall's mistake (unlikely), or by some faulty component (because the components are produced in some factory). It'd be sad to be the guy that gets a 200 dollar brick, it's like a lottery you don't want to win. Also, I know Marshall is not the same as some big company, but even Brian Parker from Retrozone (Powerpak) offers a warranty.
At the end, if Marshall choses to stay with a no-warranty policy, it will be up to us to decide if we take the (small) risk or not. It's his product, and our decision to buy.