I don't know that is the case but I'll take your word for it. If you play a Harmonic minor or Phrygian scale over a i-iv-v blues progression or a Pentatonic/blues type scale over a diminished pattern I'm pretty sure that someone will notice the difference no matter how fast you play.
" Music Is the space between the notes."
" If you can dream it, you can play it !!! "
" The only limits in life are the ones we place on ourselves."