EMGBO & EMGBOpd

It seems that there's functionality for computing a histogram of CSL or random grain boundary pair angles (EMBGO) and for computing a pairwise distance matrix (EMGBOpd). It would be great if EMGBO or EMGBOpd (preferably the first) could be modified to take a user-specified list of grain boundary pairs, similar to the MATLAB implementation GBdist.m. Is this functionality present, but I'm just missing it? (I assume EMoSLERP doesn't have it either, which I had trouble finding documentation for).

Alternatively, I'm considering plugging single pair text files into EMGBOpd; however, I'm worried about whether or not that will result in a significant slow-down.