Yes, I’ve tried them..my cats love them. But with the amount they are kinda expensive. the Packs are hard to open to get all the food out, but at the end I add a little bit of water and shake the package to get the rest out. I’ve never tried them as toppers, just as a treat.
My cats really enjoy them, and I've only tried them because I found them on clearance like 10 cents each. Some varieties do contain sugar, so I'd recommend checking ingredients if you wish to avoid this ingredient.
Feeby likes the bisque - but that is because she does not like chunks of meat in her broth (like the stews). They also have 'squeeze up' treats that I just got her, and she likes those as well. These are all food complements, so I am not worrying about the 'additives' - that and the fact that Feeby is ~17 yo and I need all the help I can get to keep her eating!
Two of mine love them and have had no trouble with digestion. I do agree that the pouches are a little bit of a pain to open and to get all the contents out, but it can be done.