Hi Roger, yes, it is worth it in so many more ways than just tone; your response is better from what I heard in our lessons, your accuracy is better too and so many more things you just haven't experienced yet. Endurance usually goes down for 2-4 weeks after switching mouthpieces, especially going from a super shallow one like the 1SB to a standard C cup. We can talk about it in your lessons, please bring your questions. In the meantime I welcome you to watch this chat I had about mouthpieces with some of the world's leading experts in brass. https://youtu.be/ePF7ebOBabw.
Ps: The more you switch back and forth, the longer it will take for your embouchure to adapt to a new mouthpiece.
Having said all of that, if you really really want to play the double cup shallow mouthpiece then of course it is ultimately up to you. I can only impart to all my students the knowledge I have acquired through over 2 decades of playing professionally and being deeply involved in today's pedagogical trumpet scene, but in the end each student will follow their own path and that is okay. We can chat more about this in our lessons and make a decision together as to which way you want to go.