I have a blackberry for work, a nokia doodad for myself and I have a small hands free type nokia for the car, I havent got around to sorting the hands free kit yet
I can see somebody in sales needing one for work so they could write off that expense on their taxes. Having a second one in case of theft seems like you are tempting fate.
I have three at the moment, but I'm going back to two soon. The reason I have so many is because I use phones that have credit left over and some of them I get free texts :D My main phone is contract and my other two aren't and they are very cheap phones :D
Spanish sim card
Hong Kong sim card
China sim card
My personal one
I wish I was able to get free of all of them!