3rd party skins allowed in MP?

[corchard]

I did some searching here and couldn't find an answer, so apologies if this has been answered before.

I'm interested in using some skins, such as Capt. Farrell's 109 skins, but am concerned about having them installed when I (eventually) fly multi-player.

Do I run a risk of getting banned by Steam if I have skins with historically-correct markings on the German planes?

Or will those skins simply be unavailable when I fly MP?

Thanks in advance,

Charlo