I made this as a Christmas appetizer and it was very good. The problem I had was the endives were really small so the leaves were pretty narrow. I'm not a huge endive fan so that presentation was great for me. The shrimp salad it great and could be used in other preparations such as a sandwich of small appetizer open face sandwich.
I took this to a cocktail party where an appetizer not requiring forks, spoons, etc. was requested. The flavor was excellent, and I had many compliments. I shelled and cooked the shrimp myself--it would be easier using pre-cooked shrimp, but might not taste as good. I used less salt and less red pepper, and it was fine. As the leaves get much smaller into the endive, two heads are not enough. I used the outer leaves of four.