Thank you for the feedback. It was something we experimented with during development. Screen space is at a premium on the mobile devices and on the iPhone it's simply not feasible to lose that space to the search field (especially with the need for the tab bar at the bottom). On the iPad it's slightly more doable as there is a lot more browsing space but it's also important to keep the behavior consistent across the devices for users with multiple devices. Do keep in mind that Apple provides the double tap in the status bar to arrive at the search field immediately for this reason. So after a search if you want to do another search double tap the status bar. Keep in mind that you don't have to dismiss the search (done button) to view the results, keeping the search field in view.