On a related thread someone posted (they are self-identified as a top) that they might try bottoming to someone to see what its like.
For some, any sort of bottoming makes the dominant appear weak in their eyes. Others will go "oh, you aren't a dominant! You are a switch!"
I believe that neither label is true. Bottoming, to me at least, has nothing to do with submission. And being a switch means that actively participate in topping and bottoming. Bottoming (or topping) on occasion isn't the same as switching - again, that's my opinion.
My question is, if you knew that the dominant you played with had bottomed at some point, would that make them a weaker, less dominant in your opinion? Would you be completely turned off by them? Or would you just shrug your shoulders and say 'meh. doesn't bother me'?