RWAP

SNBC were actually very responsive and gave me a pointer to the correct solution for this.

Basically, their printers support two modes - the API mode and a Windriver mode.  You can check which mode it is in by performing a self-test.

For unix based systems, the printer has to be in Windriver mode.  

Once I changed this over, the system correctly inserted the printer as /dev/usb/lp0

 

Well, this is bleeding edge kernel. Bugs are more than expected - hard to tell what is wrong without serious debugging. 
 
I know that instructions are not the best, but we are working on it all the time. I never thought that we must be more detailed in this - I assume people know how to handle some virtual machine and install Ubuntu Linux on their desktop machine. We give only most important information, but all aspects are surely not covered. Lately we even address community to help us on making better manuals since it's getting too much for a small crew. We even arrange one cool board as a reward.
 
Nevertheless things are working for your intention!