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Might want to talk to Zac over at @mericanhomestead I know he checked it out and had mixed results. I believe until a better blockchain option becomes available he has been using Vimeo.

Yeah, I remember hearing him mention that. I've watched a few videos on it today and it performed alright. I'll give @mericanhomestead a shout to get a better idea of his thoughts.

I've spoken with Zac as well. Dtube is ok, but it's FAR from mainstream. It performs as if it is far from mainstream as well.
The ideal solution at this time would be to have a Dtube account, automate it with your product, and hope it continues to rise in popularity.

It would be difficult to imagine 'just switching' over from YT and Dtube and thinking your reach wouldn't amazingly suffer. It would.