I haven't given it a thorough trial but my first impression is that I don't care for the way it works. You're supposed to let the food stand for 5-10 minutes off the heat to allow it to thicken. By that time the gravy would be nearly cold and only then will you know if you added enough thickener or not. What do you do then if you haven't used enough? Plus, you'd have to reheat your gravy or sauce. Plain
xanthan gum works much more quickly and you don't have to let the food get cold to find out if it's done the job.
I tried using some in a protein shake once and it didn't work at all. There was no way that I was going to let my shake mixture stand for 5-10 minutes before adding the ice to it. I always add a little
xanthan gum to my shakes and that works instantly.