Honestly, if the image will bother you then don't do it. It wouldn't bother me, but then I have long ago stopped to care what others think. Ultimately I'd rather be the one on the ''cheap'' bike shredding the trail, than on the superbike, pootling around and worrying about photo ops.
The carbon one does look pretty appealing, and more importantly - fast! A better wheelset, with some better rubber down the road and you're made up.
I wouldn't worry about the geometry too much, the 120mm forks take the sting out, and it does give you the racing option too!