Stealth Armour/Cloaking - possible bug

[Growltigga]

I have just reached the glorified heights of Armour - 4 and have developed Scattering Armour I, Emissive Armour I and Stealth Armour I.

I can see all the wonderful benefits of these bits of kit (although my testing seems to show that the Scattering/Emissive Armour doesn't really appear to work) but can someone tell me why the Stealth Armour gives you cloaking ability - given that this is a separate tech you research under physics - seems an awfully large advantage to have early on.

Is this a bug or what?