Originally Posted by
SuperCarnitas
Yup, absolutely! I looked like a complete dork once when going on a ski trip with friends, hauling skis and boots onto the Shinkansen. Received with lots of rolling eyes.

Yeah, this was precisely the scenario I was contemplating. Having once hauled a moderate amount of baggage from Tokyo to Kyoto on a direct shinkansen, I definitely didn't fancy the idea of flight + train + bus. I guessed there might be such a service, very glad to hear it exists!