MR60 Separating 2.4Ghz and 5.Ghz

Well, that is good news - I'm pleased that functionality has been added. Isn't firmware an amazing thing, how it can change the abilities of a device like that? For an old guy like me that still seems like magic. Anyway, can anyone tell me if my understanding of the following is correct? 

So, now 2.4 Ghz devices can connect to a concurrent, separate 2.4 Ghz network. That's great for IoT devices and solves a big problem with the MK60 mesh system. However, that won't really solve printer connection issues, right? Because you can only be signed into one network at a time, and if you put the printer on the 2.4 Ghz network, than anytime someone wanted to print (assuming they normally reside on the 5Ghz network) then the would have to log out of one network and log in to the other. Have I got that right?

Thanks!

P.S. I've actually ordered a second satellite. My plan is to put that one upstairs, and use its ethernet port to connect to the printer. I think this will give me the connectivity I want to the printer without running cable. That should work, right?