I didn’t noticed that “inside” option in the official bridge tool before reading that thread, interesting, i wonder what is its use, or what was its intended use in the case it simply does not work.
Now about functionnality, another in favour of the Loop Tool bridge instead of the official one is that the Loop Tool bridge allow to bridge loops that do not have the same amount of edges/vertices.
While the official bridge tool will simply warn you and do nothing.
In addition, the official Bridge tool does not allow automatic removal of the original faces (when the loops are around faces), while the Loop Tool bridge has an option for that.
Hopefully that GSOC bridge Ricky is mentionning will be as good as the loop tools one