Before I got my Bold I used to run my 8820 this way. The only real reason to hide SSIDs, and the reason I do it, is to prevent people trying to connect to the wrong network. It is amazing how many people, when told to connect to NetA, will try to connect to NetB just cause it is stronger. Then call support when it doesn't work.
Anyway, both my 8820 and my Bold worked 'out of the box' though I use Linksys/Cisco devices running Kamikaze. Also, both have Blackberry data plans.
My other Blackberry is a PlayBook.