OK,
but (as far as I remember) a Canon G10 for example, always uses the IS, but it can be switched off.
Moreover, a compact camera like E-PL2 is more likely to be used handheld and not on a tripod. And I also didn't notice any delay when using the IS.
I agree that for a wide lens (like to 20/1.7), when the default shutter speed in Auto mode is 60-80, there isn't any sense in using the IS.
Anyway, just thinking
Assaf