Last night I installed EasyDebian, and I came to the conclusion that the installer needs a slight rework - Namely an option to extract the image to a different card than the compressed image is located on.
Why? If you write to the SD card and read from MyDocs, the device is fairly usable while it's extracting(Not sure about the other way around). It also only takes an hour or two. If you are reading/writing to MyDocs, things are unusable.

As it is, it's a simple edit to the shell-script - I just added "-c" to the lzma line, and then piped it into a file with ">/media/mmc/extractedImage.img". Simple.
Now, to make it usable for everyone, an extra prompt would be needed - about 5 mins of coding.

I'll do it myself if needed.