There is a post from tablo saying Tablo Ripper does work with it - no specific details.
It’s likely you need a subscription since technically (pretty much all 3rd party apps) stream via ffmpeg to create mp4 files, no further details I’m aware of. As tablo doesn’t really support 3rd party apps, and developers don’t have $ to spend on devices just for development. Not sure if you need CEO clearance either 
If I knew there were ways (with or without a subscription) to export recordings, I liked the idea of native or near, recordings. But then thought it was screwy charging a fee to stream in your own house. (sure I’d likely have a guide subscription, just seems screwy)