Somebody can make that script into a widget easy, why do you need to remove your card so often? I think you can do everything the same just by using the phone in usb mass storage mode without the hassle.

I do not have a micro sd yet waiting for 32gb and a good price but its not something I would plan on taking out often since its behind the cover and all that.

I would think if I am taking off the back cover I want to turn off the device first anyways.

Infact speaking of a widget, there may be one that already works. Check this out - http://talk.maemo.org/showthread.php?t=39177

Its programmable so you can just put that script into it I think.