Between duty, off-duty, and PPC competition. my sole interest is function.
So I see zero benefit to an unfluted cylinder.
In terms of aesthetics, I am of the form follows function school. Thus I find the appearance of a revolver with a fluted cylinder preferable since that is consistent with its intended purpose.
I have on the wall a 586 6" commemortive revolver commissioned by my old department. It has the stock fluted cylinder. From the introduction of the L frames, with their full underlug barrels, and ideal size medium frames, I have found their design to be perfect.
I see no reason to tamper with industrial art.