I'm not familiar with TB but, coldn't it be the 'channel' slot which is marking the 'R' channel instead of 'RGB'? Plus: I think your 'roughness' map is actually 'glossiness'.
Transform Toolbox Awesomeness Pressing 'R' will Reset Xform and Collapse the Stack: Pressing 'Origin' will move the pivot to 0,0,0 Precision rotates there are quite nice as well. :D
I wonder whether they struggled getting together a decent sized budget given they're going "hard R" with a property that isn't guaranteed box-office gold.
Also, there's an article on Toolbag site that covers process of manual converting M/R maps to S/G maps. http://www.marmoset.co/toolbag/learn/pbr-conversion