Who has done it and how has it been working for you? I like using the skin because it keeps the slim design of the iPad while protecting it from scratches. The only thing I'm worried about is dropping it.
I have that combo: smart cover, power supply crystal screen protector, and lucky labs skin for the back. Working fine for me, didn't want to mess with the thin profile of the ipad like other cases
I use the grey smart cover with an SGP crystal screen shield and a wrapsol matte finish skin on the back. I topped it all of with a Sena ultra slim pouch to carry to work. I love this combo. It keep the thin form factor of the iPad and gives me all the protection I want.