A centre one-way maintains the differential action on drive, a one-way diff effectively locks the driveshafts together under load / acceleration.
With a centre one-way you get all the benefits of a one-way under coast / braking (i.e. the car feels a lot more like a 2wd car off power whcih some people including myself much prefer) without the downsides of a one-way diff (the car following the track surface etc.)
For me a one-way layshaft is always the better solution if available ..... which it soon will be for the ZX5-FS, I can see my prototype from here
