I would say Zierra is probably more useful. Which is my own fault. She has all the ahility to be handy, but because we typically just trail ride, we don't have a lot to practice being handy with. She's handy on the ground, does that count? In the saddle, she's a very go-go kind of horse, again my fault. I could easily dismount and drape her reins over a tree branch and have her stand while I cut branches, but she'd not stand very well to let me cut branches from the saddle.
Good post kevinshorses. Really gives you something to think about, and realize when there aren't neccesarily "holes" in the training, but moreso a lack of training to complete ability. I could excuse myself by saying we never encounter situations where we have to open a gate, but it's still an aspect of her training that was never finished upon which I used that as my reason not to. Which really isn't a very good reason at all. You never know when that situation may arise from nowhere!