They are really light and allow for adjusting to different heights/angles quickly. However, if calling coyotes to you, most people have time to set up. I would recommend something more stable. They can also be a little noisy. I tried one a few times and after a few misses on coyotes decided a sturdier tripod was suited for calling coyotes.
I still do use one for backyard animal control. Shots need to be quick and from all types of heights and angles.