Red,
The Wave is a very clever feature. If you are really in a hurry, then you have an advantage because of it.
I am not sure whether waving a knife open will damage it in the end. These knives have been designed with this feature in mind. Besides that, just try this: 1. Open the knife hard with the Wave and take a look at the point the liner engages the tang of the blade. 2. Open the knife hard using the thumb disk. Don't perform a wrist flick, but just keep on pushing the thumb disk real hard. You would think that the force you apply with doing so would be the same as when you wave the knife open. But just look at the position of the liner. With all of my Emersons, the liner engages before the center of the blade when I use the Wave. When using the thumb disk real hard, it travels further. Nothing to worry about, just an observation.
My conclusion therefore is that using the Wave doesn't put that many energy into the knife compared to a real hard thumb disk opening.