Well the thock is produced by the switches, slider housings, and plate, with the RF being plastic slider housing in a metal plate. A majority of the sound is just coming up from the face of the plate to your ears, so the case material surrounding and below the plate shouldn't matter *that* much. I would assume the overall decibel level and pitch will be altered somewhat, but probably imperceptible levels. Maybe someone with the novatouch case can comment on how it changed the sound.