I don't think this is needed, the development team are reliable.
However, I have lots of machines (pc and mac) here at home and could easily install a wallet on an empty till to hold the pre-mine as escrow.
You will note that I have nothing to hide, by my signature links, and if I run away with any escrow, feel free to hunt me down (this wouldn't be difficult)
lol
at the end of the day, I will reiterate; I don't feel the dev team need a premine escrow, but if the community are happier to have one, i will offer to hold it at no cost, free of charge.
prove they're fucking reliable - put your escrow where your mouth is...