I've never had it, though my Mom keeps telling me that when we have Thanksgiving together, she'll make it.
When I went fully vegetarian in 2018, I made a rule to myself to avoid these sorts of meat substitutes. I'm not preachy or dogmatic about it but if I can't think of how I would make it myself, I try not to order it. So, tofu and black bean burgers are fine, but I avoid impossible burgers if I can. I worry about their environmental impact mostly.