I've practiced twice over the course of a week on my two girls (my big male is in shed). And yes what you said is true. The leo girl I just got a bit of liquid, I think just scent stuff. The clown girl unloaded all over my shirt after I was done. Like rocket launched her urates so I didn't even know she did it for a few seconds.
I need to practice on a male. I don't feel like I'm getting enough out. Just little fleshy mounds. It seems like in the videos they have more out.