It’s an overhyped version of premium service, travelled once till LDH in SVDK VB, if speed is the differential factor then existing service such as Shatabdi & SF Express hasn’t been tapped to its full potential of speeding.
IR should’ve thought to adding more Gatiman service by upgrading infra than introducing new category of service and putting load on infra.
PS: again it’s my personal view open to disagreement.