So, the first few flights I took my iPad out like a laptop. This last weekend I left it in it's little netbook bag and the lady asked me if I had a e-reader in my bag. I said no, and iPad, she asked is that an e-reader or a computer. I said 'both'. She said all computers need to be out of the bag to go through security. I didn't argue any further. This was in Minneapolis. The return from Orlando I just took it out again like a laptop.
I'm sure we'll be required to remove them all the time once they become more common, they've always said that laptops and other larger electronic devices should be removed and scanned separately.