It's good if the guy is hung big, downward curve, and really hard. I know, very specific requirements. But when all that happens, it's a really intense angle but can control it, if that makes sense. From kneeling, I can't do the squatting thing.
When she is kneeling and riding it sometimes happens yeah. But if she is careful and a bit slower about it it can be really intense.
We prefer the squatting reserve cowgirl position but it can get pretty exhausting on her after a while.
What I like to do is put my knees up and under her legs. She puts her hands on my chest or next to my chest on the bed or whatever surface. Then I hold her ass with my hands and she is kind of suspended above me. It allows me to really pound away hard from below at angle we really enjoy.