Being happy with my VMBELx buttons, I notice that the - Configuration Settings - Preferences - sound is sometimes not audible (ambient noise, hearing aid, …).
Alternative could be another option to have a visual feedback, indicating touch performed.
There is always the 0v / current sinking connector on the back of the Edge Lit series, no reason why you couldn’t hook up a little sounder to it and configure Follow actions to the buttons.
But that only covers standard button presses, rather than all the other “click” events.