We'll allow late pledges for as long as we possibly can. Hopefully you can find a few other people to go into a pledge with.
Also each pledge comes with the PnP for free, so it would be difficult to try and sell them. That being said when the campaign is over we'll look into allowing late backers a chance pledge for a PnP only option.
Thanks for the reply. As no one contacted me so far, it is unlimely I will be able to pledge, so I will wait for the pnp late pledge :-)