I take mine hiking. It's a nice little GPS device and I still like to receive emails. Usually I end up switching to Airplane Mode, only bringing it back online (without 3G, wifi or BT) every few hours to check for messages, update the map etc.
On a side note I find using GPS makes me less trustworthy of difficult routes. If I just go myself with a memorised map then it's much easier. I never thought that would happen, having wanting a GPS device for years (but never being able to afford one).