If this can be quad-packed into national VLS it will be an insane capability. Dual-packing will also be extremely good.
I guess thanks to the foldable fins we can integrate the Siper missile into a cell with a diameter of about 400mm. Quad pack ESSM's body diameter is 254mm. With the volume that the folding fins will occupy, the ESSM will reach an estimated diameter of ~300mm and I guess this is the limit for quadpack. The CAMM-Er reached its quadpack capability with a 190mm body diameter. The target in the Siper is probably not the quadpack but we can see it in the Hisar-U.