Professionally it can either be highly lucrative, or a complete dead end in the near future. I saw this when I was doing illustration work, in that a certain style got you more work, but eventually that sameness could become dated. Some professional photographers have thrived on a certain look, or approach (style?), in their images. Obviously the camera points both ways, and it is good to be distinctive. When I think that fails is a look that can be somewhat of a fad, or novelty.
Even in advertising photography related work, it is good to move around more with approach, to avoid becoming stale. Some clients will want trends followed, so doing something in the
style of another photographer will be the end result. Other clients will want a more open approach, giving you a chance to share your creative input on the problem at hand; then your interpretation can come through. So sometimes it is more appropriate to give the client what they expected, though with more open minded clients it is better to
surprise them a bit.
Oddly enough, your approach (style) to imaging might get your foot in the door, but in commercial imaging it is often your personality that will get you the work, and keep clients coming back to you. In many ways, working as a professional photographer is more like performing, and not strictly about the images.
Ciao!
Gordon Moat Photography