This thing would be great to carry around the hospital - there are real dead zones that kill my Evo's battery. I could slip this thing in my scrubs, or in my white coat pocket easily.
I'm out servicing customers all day at work so I don't have convenient access to a charger at work. This could come in very handy for me. It would also be nice on camping trips to have a backup to the backup battery I bring.
This is a very neat little device and I think that it is very convenient. I travel around a lot and think that this amazing device would help get me that extra mile when I am out and about. I have a rooted Samsung Epic 4g and even though I am running the best setting to conserve battery life but still after I foursquare tweet and Facebook myself around as I write reviews for the very devices I use there just never seems to be enough battery life. :'(