The Palm T|X is everything you want except weather and bulletproof. It also won't take well to being thrown across the room or dropped.
But they do make a hard case for it.
I busted the screen on my Palm IIIxe during an unexpected patient takedown some years ago. I had a new one in my hand (thank you palm protection program including one free screen replacement) within 24 hours.
(The T|X comes with Adobe Reader for Palm, ereader, plenty of other doc and database reader apps available too. It also has Docs to Go which allows you to read, manipulate and generate actual MS word, excel and powerpoint documents. It has WiFi and Bluetooth, removable card spare storage, and loads and loads of available software.)
Goes for about $300
|