Otos get along well with shrimp.
Amanos do sometimes climb out of the tank. I did not have it happen, so I cannot speak from experience. But I know enough people who have mentioned it to know it can happen. Actually, any shrimp or fish might climb or jump out of the tank. I have had a few cherry shrimp over the years that climbed out. I usually am too late and find them crispy on the floor. Some people say they are more likely to climb out if the water parameters aren't very good. I think they just climb up a cord or hose that is in the aquarium and don't realize they are out of the water until it is too late and they don't know where the water is anymore.