You are referring to these lenses being used on a full frame camera. We're talking about a crop. On a full frame, the 50mm focal length makes a lot of sense a general walkaround and the DOF problem is not as profound. The debate between the 1.4 and 1.8 is tougher with respect to full frames. On crops, its a no brainer.
No, I'm not. I've used them extensively on both - of course the focal lengths serve a different purpose on FF vs crop, but my comments weren't specific to either. That's why I included links to samples on both a FF and crop body.