BlackBerry :: Touchscreen Enable/disable Option?

About the upcoming devices all featuring touchscreens, how about adding touchscreen enable/disable option ?For example, my company operates gas stations so I work with liquid hydrocarbons (gas, biodiesel, motor oil) and most of the time during the day I use the trackpad for phone calls and work apps like DocsToGo or BBM instead of a touchscreen because of its functionality and well, it won't become a mess if my hands are a little dirty, just like the touchscreen would. But during the night, hanging out with my friends or family, when sharing videos and photos, I'd love it if my BB 9700 running OS6 had a touchscreen (that's why I'd buy a Bold with a touchscreen), so I could have better media playing and internet browsing experience.Also, I've heard smartphone processors render faster when they are not handling touchscreens, so disabling it could give a merely functional experience while working (which is what most working people love about BlackBerry devices) and would save some battery life as well. Still, you could get the full social and media experience(which is what RIM is aiming at too with the upcoming devices) anytime by enabling it again.