I have not tried it, but there's a lot to like there. It's impressive that a pad that thickness can also have the packed size they're showing. As much as I think it looks like a potentially really comfortable pad at a not terrible weight, I think I'd have a hard time finding a niche for it (for my use cases).
I only really use a tent during bug seasons, and my one-man wouldn't work with a pad this thick. It'd be a great option for me under a tarp (winter trips), but the r-value isn't good enough on its own - I'd have a hard time justifying the weight knowing I'd need to add something to supplement the insulation.
Without that tent compatibility limitation, I think it's an interesting pad for 3-season use.