Only if USB OTG becomes standard. Of the three phones that I have (N900, N9 and Jolla), only one has USB OTG and even that is a non-standard after-market solution and does not always work.

This idea looks good on the face and if I had some money to burn, I might even consider it, but I do not think it is really worth it. Plus the page is full of marketing BS and misleading half-truths, which does not bode well either.