PD, first welcome to APUG. I haven't found this to be a problem and I think my training and background has been a distinct advantage. I think it all depends on the standards that you apply to your work, if you've been working in a more demanding area of commercial photography, like national advertising or editorial work, you might be better suited and trained to succeed in the art world. I also know of, and even assisted, many advertising/editorial photographers who did quite well in the art world. Avedon, Penn, Newman, Adams, etc all did commercial work.
Originally Posted by Private Dealer