Yes they'll care. Especially when you look at how many cores you need on hand to print different materials, and at different nozzle diameters (If UM release them)
I run 2 printers 24/7 at my company and swapping them looks convenient, but a complete stock of nozzle cores x diameters would cost more than the printer for all the materials we stock.
As mentioned before, you don't need multiple nozzles for different materials, it can handle them all without atomics in-between.
The heat zone is also smaller the Olsson so there will be less left over plastic on a material change. And if you want a clean start then just do atomic when changing.
Also stainless nozzles suck. Hardened steel is better and it looks like Ruby is far superior again.