If Uncharted isn't your cup of tea? Ha! Good luck. Sure, there are a few people like that, but how many might buy InFamous? How many won't want to give Uncharted 2 the benefit of the doubt and try out its multiplayer, IF they do happen to be one of the lucky ones with the Uncharted voucher?
From what I've seen in the Uncharted forums, most people only disliked Uncharted for minor reasons. They probably will want to use their voucher. I'm not trying to be mean and say it's impossible, but it probably won't happen soon. Maybe wait until U2 is released? Rent it first?
There should be a joke in InFamous where Zeak just hands Cole a lozenge.... That's all I wanted to say. Go InFamous!