Not for me, I do "touch" typing. Those little bumps on the "F" and the "J" keys are there for a reason... I don't look at the keyboard unless I need to use some very special keys.

I'll use a flashlight or headlamp when I need light. Such as finding the very special key on that particular keyboard configuration, or looking at my notebook as I type.

But hey, that's me... I want to drag around LESS fidgety items, not more. Any "cool gadget" that wants to find its way into my laptop case has to pass my very harsh "how can I do without this gadget" scrutiny.