I know a lot of people swear by this, and say it tastes "exactly like/better than full fat ice cream" but I don't see it at all. To me it tastes decidedly worse than full fat ice cream, to the point where I would certainly rather have 1/8 a pint of any other ice cream rather than 1/2 pint of halo top. But I am not that big into ice cream in general, and since going back to the gym and getting back in shape I just haven't eaten any ice cream (aside from maybe 2 times on vacation?). I've also never had issues with portion control (I'm quite lucky, fiancee is the opposite) so I could easily buy full fat ice cream and not over-eat it if I ever decided I wanted it. Again, I'm very lucky in this regard (though I certainly have my own vices I struggle with when losing weight and being healthy)
Glad it works for people though, awesome that it exists.