Look, here I am doing it!
(Yes, that is a number 12 on my thumb... it is my Super Bowl manicure... go Pats!)
It was so awkward for me to hold the yarn this way, but I managed to do it and I made a tiny little amigurumi snowman wholly working in this style. I split the yarn a lot more often than I do crocheting with the yarn in my right hand and I feel like my tension is really uneven. I definitely need practice, but I think this is an important skill to learn, so I'm going to keep at it!