Having two candidates for a theory of everything is almost as upsetting to physicists as their inability to reconcile quantum mechanics and generalrelativity in the first place.
In particle physics, sound-bite explanations are much harder: wave-particle duality, quantum mechanics, generalrelativity and string theory make good mathematical sense, or so I am told, but they generally defy translation into English.
Roger Penrose, for example, has long been on record as arguing that it is quantum mechanics, not generalrelativity, that needs to be modified in order to successfully develop a grand unified theory.