If I send you email from my blackberry, does that make me a prick?

When I send someone an email from my Blackberry pearl it says, "Sent from my Blackberry" on the bottom of the email. It originally said something like "Sent on the go from my Blackberry on Cingular Wireless." Yes, that was when AT&T was Cingular.

But I changed it to say just that it was from my Blackberry. Not because I wanted to brag that I'm too cheap to pay for my own cell phone (my work pays for it) but I just wanted people to know that my poor grammar and short replies are because I'm typing it from a half keyboard.

But seriously... does it make me sound like a pretentious asshole?