http://imgur.com/a/BpFKQAs you can see in the images, there is my "Knifestorm" Unusual effect on my undisguised spy at which everyone can easily visually see. But I've noticed how even as a very decent spy, that when ever I'm on the swapshop Servers, I'm easily recognized by even newer players.
Turns out as you disguise as the Medic, my unusual effect does reveal to everyone on the opposite team. But as you an see when I disguise as a demo, the unusual effect is completely gone away. Thus the examples are all on my HUD in the bottom Left.
I don't know if much can be done about this, but the unusual effect is a VIP Perk, and I would assume it would be a bug whether in Valve, or the pluggin.
But thank you very much for your time.