Describing TAK to have a calming effect is a pretty good description, I do believe.
My take on TAK is that it seems to lighten the mood in social situations, not like the mood brightening effect of TAA, but more of a keeping things light and easy type of vibe. So yeah, I guess you could also call it a calming effect.
I did not notice a calming self effect, but this time of year my sinuses wreak havoc on me, and it’s more often than not that I’ve got a nose full of Psuedoephedrine and don’t get much, if any, self effects from my pheros.