I have not tried them, but have seen many different styles advertised.
Most, seem to me, to provide too much bulk in an area where I want none. Having lived with a few women of varying age groups, mother, 3 wives, a daughter, two step-daughters, and three step-sisters, showing off a camel-toe was horrifying to them. I have seen them after getting dressed, double-checking themselves in the mirror to make certain that "nothing is going on down there".
In my experience, a good tuck provides a better and more natural look. As hormones removed most of my "bulk" in that area, leaving not enough to tuck, compression underwear serves the same purpose keeping everything "up and out of the way".
So, I would have to say about such products: Not Recommended.