I think we are talking about two seperate drills.
The drill I am refering to is for effective kata bunkia in other words what is available in that kata and drilling what is available .
Ingraining and keeping the techniques to memory. To me they have a lot of use.
But as I said it is a drill. Not free fighting or reality training.
Either way that is what I use them for.
I assume you're talking about the Toguchi drill. If you are, my criticisms remain. It is not bunkai - it is a literal superimposition of attacks on the kata template. The kata was never designed to be a 2 person form. I've had very little "value" from this form, despite giving it a good go for almost 2 decades.
Sorry Jude - to me we're talking yesterday's technology. If you want something useful and don't like our embu, look at Pat McCarthy's 2 person drills by way of comparison.