Has anyone else seen this BCR Mapping before?

I've slowly been switching from turntables and serato to controller and traktor. Running a custom mapping on a NanoKontrol because I couldn't find anything that gave me more of a traditional 2 deck feel with basic controls for everything right up front. I'm in the market for a new controller and it's either going to be an x1 in addition to my Nano or replace both with a BCR2000 and this:



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The uploader posted some notes. I believe this is probably the most common sense mapping I've found. There's 2 extra open knobs which I would prob assign to a master vol and headphone vol since I still can't get over not having headphones.