I am the Leki guy...using poles Can burn more energy..but Trekking poles are designed to reduce the effort and distribute the impact.
Nordic Walking poles are designed to enhance the workout and use slender grips to enhance the grip/release effort.
The poles suggested appear to be a hybred between hiking and exercise.
Can you get exercise with trekking poles..of course 8)
Can you use nordic walking poles on the trail, yes, but not as well or safely on the downhills...pointy top grip..