I do not think it very likely to show a physical skill or technique and be able to walk away and use it in 1,2, 3 days. Highly unlikely against a living opponent that is trying to win or hurt you. Spent a number of years wrestling and coaching it. Being able to perform a move or technique is tough enough in a drill situation, but being able to perform it live in practice in a combat situation is different, and being able to perform it live in a match in public is still different.
I see the same thing from people with a pistol. Learn a skill and then they do not practice it. They will not be able to perform that skill on demand.
I see the same thing from people with a pistol. Learn a skill and then they do not practice it. They will not be able to perform that skill on demand.