What's your view on low light photography of RX100
But if are asking about low light handheld shots then I think you wont be able to go too high ISO and tele end is f4.9 which is too slow...it will be worse then a DSLR+kit lens..but ultimately produce much better result then any P&S ...remember its worlds best P&S only.
I can shoot at ISO 1600 with S110 without having to worry about noise, RX100 is much better camera.