I don't get the feeling these Storme/Scorpio are for replacement of the Gypsy in the field but as General purpose Vehicles for officers and some logistical roles. The Storme and Scorpio are too "soft" for the majority of frontline combat roles IMHO and Tata and Mahindra need to pull their fingers out to produce more militarised versions.
I think the Gypsys in frontline roles, though, are intended to be replace by the light Support Vehicles, LSVs (Mahindra AXE and the like) but god knows where that program is, trails where held many years back and since then almost no forward movement.
Tata has even sold (well part of GoI aid) some to the Seychelles: