I am no expert in this matter. But It is possible to make it work.
Its not as simple as to download the FW and install it. The bootloader on the pocket book, Cybook, Eslick, Mentor are different. The hardware is same EB600. If we can have help from some who knows more about this subjects and instructions how to change the bootloader. It can be done and will work exactly like PB.
But again one can just buy the pocket book

And most people on this forum will support that.