Strictly speaking, no.
Before I do ones that are directly related to a faction - for instance, the Snow Trooper Backpack, which is clearly tied to the Galactic Empire - I like to see if I can get endorsement for it, and in doing so dig around for any information that I can use in the description.
Again using the Backpack example, I described the standard loadout as it is in 'canon', but perhaps the Combine's Empire had a completely different one. And as this is the Combine and not canon, this would result in a pretty shoddy description by virtue of it being horribly inaccurate.
These factions may also have people already working on that description for all I know. And besides, it's just polite.