One wouldn't. One would set the body to "M" and set the aperture and shutter speed manually, per the flash meter. I don't know anyone that uses studio lights that uses the camera's meter or thyristor control with them.
i have one i use with my lumedyne 244 ...
output can be full 400WS or 2ws or trimmed in between.
its pretty useful ... and i wish everything i used had this feature ..