You can turn on full engine-braking in a Prius and it works fairly well (but also uses the ICE). It's enough that I use it entirely in most cases to get down to coasting speeds.
I drove a Toyota CR-V and was really amazed how it manages to burn fuel while decelerating. It is a disgrace of a hybrid vehicle.
Does it actually burn fuel? I've coasted an ICE car down a mountain in the winter and the temperature gauge didn't budge (and thus the heater never warmed up), implying no fuel was used. Surely a hybrid could do the same?