Thanks happy26688! I just did some follow up reading of other boards and that seems to be the general concensus...50 couldn't use it and about 3 said the cashier let it go through even though it's a one-time-use email specific code. I'll pass on this one...
I was able to get one. Took the coupon in and told the girl at the register that I got it in an email when it wouldn't ring up. She called someone else over to ask about it and stated she thought she had seen something on the employee's news about them. She found the article and it specifically stated it was a one time use only. She went ahead and put in a coupon override and gave my the stylus, with no pushing on my side and me thanking her. So, ymmv.