There is a case with a hand strap, forgot which one, and i didnt have a clue how this was supposed to work, the strap seemed misplaced.
I am using the Tucano Youngster universal case for my 7" tablet. By putting the sling attached to the zipper over your thumb, you can safely hold the tablet one-handed in portrait and landscape mode. With the 10“ version i finally got for the Note, only portrait works, or you have giant hands.
The best Note specific case seemed to be the hard to find Rock Excel, but w/o strap or sling, which is important to me.