Or nor have a false dichotomy. Nothing stops a fellow from doing both. I started in a Shotokan School... and have taken private instruction in it for a very long time under SKA instruction. As mentioned on other threads I did two separate 9 month intros into Aikido. Neither led to a dan ranking. But your point is an either or. Learn calculus or algebra Teach calculus or algebra Distinction has a value but I disagree with the dichotomy. Arts can speak and inform each other and my Shotokan training makes my TSD art better. I have come to a place of And/Or. Learn calculus and/or algebra. The only new curriculum ahead of me in TSD is the 150 step/movement Yang Taichi form. A whole other Art within my Art. I am not ready to do Tai Chi as my full on studies. The rest of the tsd curriculum is deepening in what I already have in my head. It is seeking to perfect rather than seeking to learn. My Master did not teach a pure TSD art all by itself. He had us doing shikko knee walking up and down the dojo for hours. And kicking and attacking from a sitting position. These things... I do as well. Makiwara striking. Stone hammer conditioning. These things my students know because of my shotokon studies, and other styles of Karate training. However what Katas that I know apart from Hwang Kee's TSD as it was taught to american G.I.s are not taught to my students. Thus I preserve the curriculum of my traditional art of tsd. And hand it intact to the next generation. You should read the article "why I stopped practing my style and you should too" by Jesse Enkamp. Why I Stopped Practicing My Karate Style. (Maybe YOU Should Too?) | KARATE by Jesse Karate is like the whole of a carrot cake. TSD is a part of that cake, but only a small slice. Shotokan another small slice. At this point.. I am now looking far back to inform my own art's direction. I accept the whole carrot cake as my style, just like Jesse. Soon I may dare to create a formal tradition of my own. I am sure you run into DRAJJ-Hapkido arguments alot.