I actually hold the phone with my right hand. Even though I am left-handed in almost everything else I do, it just feels comfortable in my right hand compared to my left.
I'm a lefty but this isn't an issue for me. When I'm on a call I hold the phone with fingertips on the sides and top. I don't palm it.
I'm a lefty, but my typical grip when I'm talking on the phone does not bridge the antennae. It's a little more annoying when I have the phone in the palm of my hand surfing or whatnot.
Why don't you post this on a Verizon board instead of an Apple forum ?