Never heard of this before and I see no Youtube videos that show it.
I just completed George Lang's autobiography called "Nobody Knows the Truffles I've Seen." On page 110, he reports that he competed on Arthur Godfrey's "Talent Scouts" show. I quote the book here: "As a parlor trick, I had developed a novel technique of playing two violin bows by using one as a violin and the other as a bow. I became the Paganini of the metier. With the help of a microphone, the sound was quite loud, like a chorus of bees groaning the "Anniversary Waltz" a capella, which was exactly what I was playing."
Has anyone else heard of this or, better yet, can anyone here do this?
Without deviation from the norm, progress is not possible. —Frank Zappa
The future is already here—it’s just not very evenly distributed. —William Gibson
Can't say that I have.
I'd offer one bit of advice to anyone who want's to try - make a carbon fiber bow the "violin". It'll stand up to the degree of tension needed a lot better.
I'm a tad skeptical it was a regular bow with regular hair. It'd be mighty hard to get all that hair onto a round stick to play different notes. Playing ONE note, yes. Enough different ones to make a song....? One quarter the usual hair and an octagonal stick, maybe. Don't try anything near the tip, though. Way too much force needed to get a note.
I'm insane enough that I was ready to give it a try, then I remembered finger oils on bow hair. Something to only be done with a bow you don't want to use as a bow until after it's next re-hair. (Or maybe with latex gloves... )
Gadulka (traditional Balkan "fiddle," https://en.wikipedia.org/wiki/Gadulka) and erhu (traditional Chinese "fiddle," https://en.wikipedia.org/wiki/Erhu) are played by touching the strings, not by pressing them against a fingerboard. So--in theory--pressing hairs of the "violin" bow against its stick may not be necessary.