PB2 in chocolate protien shake

need some help!
I love having a chocolate protien shake everyday, but my favorite thing to do is add peanut butter to it. i find that it tastes ten times better...unfortunately there are almost 200 calories in 2 tbsp of peanut butter... So i'm trying to find a way to add the peanut butter taste, but without all the fat and calories... has anyone tried that PB2 stuff in protien shakes? does it taste the same?

thanks!