Yes, I think that this is pretty impressive. I don't think that cats learn tricks very easily at all. It's not in their nature to learn tricks and to keep doing the tricks without a reward (food!).
Dogs will learn a trick and keep doing the trick just to please you. That's not a cat, LOL!
The only "trick" my cat, Elvis knows is to come to me when I talk in the baby voice and make kissie sounds. Even so, he comes because he knows he's going to get "lovies". He also goes crazy when he hears a can being opened, but that's not a trick...he just thinks he's going to get tuna!
Make no mistake, I firmly believe that our cats love us! They're just not push-overs! They will NOT do what they don't feel like doing, LOL!