I dont know about this new one. The 3600 Otterbox has a "mounting bracket" which accepts the Ram mount system do it was straight forward. The PDA fits inside it and there is a waterproof pod for the GPS and waterproof through the box connectivity as well. The whole thing is also shock proof.
The down side of the 3600 is that it was designed a few years ago for the then state of the art PDA's which were much larger so its a bit chunky and the Pod was designed for barcode readers so is not big enough for a lot of the GPS receivers (I have a Pharos iGPS which is one of the smallest).
Easy to use whilst on the bike and the box holds a pointer which I can get to wearing Pathans.
There are some pictures on this thread
http://www.bikersoracle.com/gs/forum...hread.php?t=89