I have an EVO (android, not droid!) running the latest versions of Amon ra's recovery and Fresh's EVO rom. I made a trip to Yellowstone a few months ago with both it and my jailbroken 3G iPad. It was really sad that I had to tether my iPad to the Evo half of the time just to get internet. AT&T really does have an atrocious network.
ETA: I open carried the entire trip btw (through Washington, Idaho, Montana, and Wyoming. It included several friendly interactions with park rangers. One of which ocurred while a mama bear and two cubs were less than 50 feet away (that range is technically against the park rules, but the bears were down a cliff; until they decided to climb it and he told us to scram!)