Autumn tried both last night and it went great! We've been giving her a "training" sippy cup where the spout is the shape of a nipple, not the typical sippy cup spout, and we would give her some water. She was doing well with that. We decided to try her out with a real sippy cup and put some apple juice in there. She LOVED the juice and took the cup without hesitation!
She's growing up WAY to fast!