My version of reality was revealed when I did some homework before jumping into the EBR world. I like many things about the Nook, including the native ability to read library books.
From a device standpoint, I much preferred the Kindle but bemoaned the lack of native epub capability. So I investigated how to read library books on the Kindle and am comfortable with the process to do so. I don't anticipate having any problems reading library books on the K3.