I'm just going throw in my

for what it's worth.
The best doc I've had the privilage to be seen by was far from the "norm" in his professional setting.
Now, where as he was dressed nicely, he had made no attempt to cover any of his tatts or hide his peircings. The man had full sleeves (he was wearing a short sleeved shirt) and several facial/ear piercings.
He was curtious, professionally mannered,and had a great attitude.
I only wish the other doctors/medical professionals I've ever seen throughout my life acted the way he did.
Looking past the tatts and peircings, I find I would rather see exhibited the mannerisms than appearence.
Although, I would agree...Flip-flops DON'T belong at most jobs.
(keep in mind this comes from one who wishes eventually to set off metal detectors AND have a professional job)