That's correct, there is a lot of hard and quite brutal body punching in Inara vs Jessie. Too hard and brutal for me to find it sexy, to be honest.
I think there is also body puching in Hollie vs Maggy, and maybe Hollie vs Inara too, but I can't be sure about that as I haven't seen either of those.
Inara vs Jessie is the only ECC fight I've seen that had body punching. Wrestling, hair pulling, and slapping to the face and body are the usual rules for an ECC fight, but I couple I've seen had some kicking too.