I never import BSDF XMLs into WINDOW, but I did follow the guidance in that document you reference to create blinds.xml, and it was created for Radiance -- specifically, for the Radiance daylighting workflow in the Radiance measure.

So, no (you should not be concerned).

For sanity testing of BSDFs I recommend using BSDF Viewer or the bsdf2rad debugging tool to visualize the distributions. This tutorial includes some examples of using these tools, distributions, and this hilariously irreverent hilarious blog post summarizes for a summary of the Radiance BSDFs in OpenStudio.OpenStudio.