Hi Jodi!
In Canada, we actually have a good selection of grocery store brands that are low carb. Compliments brand (Sobeys/IGA) and President's Choice (SuperStore, LobLaws) foods have good choices. One big bonus is that the PC and Our Compliments cost less than FF, and several of them have better ingredients! There are several of the store flavours that are low carb- like duck or beef and liver- which FF doesn't even carry. (And yes, the "pate" FF are the ones you want. You can also use the pate Friskies - Chef's Dinner, Turkey and Giblets, and Chicken Dinner are favourites here.)
Janet has added a section of PC foods to her international food list if you want to check it out. The Sobeys ones aren't on yet because we can't get the "as fed" analysis of the food. Also, WalMart makes a small tin (85g, same as FF) called "Special Kitty" and LOTS of those are also low carb, and cheaper. Janet has quite a few of those listed. Just make sure you are checking her non-US charts.
If they are not in Janet's list, the next best thing is to label read- avoid obvious grains and other carbs (potatoes, peas) and things called "food starch".. which I assume is cornstarch, but the "starch" part says "stay away" to a sugarcat. The Friskies pates do have some brewers rice, but it's far down on the ingredient list, and never affected my cats' BGs, but obviously watch for that, too.
Good luck!