I have both also defined as buttons on my toolbar for easy access but before i know i have already used the hotkeys started a long search and then remember I cant continue working now and have to kill the search use my button and re-start the search.
I been using TC since dos days and those hotkeys are so ingrained in my behavior that I can not, not use them

Maybe this can already be done by changing something small in an ini. I have tried re-defining existing hotkey's long ago but it did not work then.