Before revision:  In addition to the advantages in terms of accuracy and efficiency of the velocity model building (compared to standard tomography) it can be used to assess the quality of standard uncertainty-related assumptions (linearity and Gaussian hypothesis within the Bayesian theory) and estimate volumetric migration positioning uncertainties (a generalization of horizon uncertainties)  .
After revision:  In addition to the advantages in terms of accuracy and efficiency of the velocity model building (compared to standard tomography) it can be used to assess the quality of uncertainty-related assumptions (linearity and Gaussian hypothesis within the Bayesian theory) and estimate volumetric migration positioning uncertainties (a generalization of horizon uncertainties) .