iPad only App: on which store?

Just finished my App; I was wondering, since iPad is at the moment available in the US only: should I make the App available in the US Store or worldwide ? Making the App worlwide could slow down approval till iPad is at least on EU markets ?
Has anyone had experience on this subject ?

Just helped someone (can’t name them for legal reasons) release onto the ipad. Just put your intended markets and the app will automagically be available as and when those ipad stores go live.

Seems that other iPad stores are going live today, even if things don’t look so stable yet… thanks !