Tried an experiment today - mixed both Torani Sugar Free flavors into my cup of illy Extra Dark Roast.
Interesting.
I used 3 pumps each of Salted Caramel and Irish Cream. Not enough to come through on their own, but the blend is interestingly sweet. You get a taste of creamy caramel, with very little salt. Quite smooth, no unpleasant aftertaste.
I'd rate the mix as very acceptable.
https://shop.torani.com/Sugar-Free-Salted-Caramel-Syrup/p/TOR-322737&c=Torani@SugarFreeSyrups
https://shop.torani.com/Sugar-Free-Irish-Cream-Syrup/p/TOR-372053&c=Torani@SugarFreeSyrups