lol, Poppaea! I had that happen yesterday with my eDGe. Same result -- both cat and reader just fine!
As for the Sony, mine is in an m-edge case (with a light, but doesn't have to have that) and it is
very well protected. The case adds some weight and heft, but it opens and closes easily (I have their "executive" case) and would keep the device safe in a backpack or outdoors (barring rain) as long as it's closed. Also, a screen protector is a must, in my opinion.
Nice gift!
Oops, and gosh darn! M-edge doesn't make the executive jacket for PRS-350.

But perhaps this:
http://www.medgestore.com/products/p...?device=prs350 is just as good or better. And I'm sure you'll let him choose a skin for his device, too, which is protection from scratches and will make it truly his own.