Tantu armor fills out both slots for armor and gloves. It will count as 2 parts equipped for the boni.
Equipping an indivual gloves piece will remove the Tantu Armor (or vice versa).
You can only toggle visibility on the armor slot which will affect both armor and gloves slot. Toggling gloves will not have any effect.
PA has begun to "unbundle" clothing and seperate them into individual pieces. When or if that will happen to Tantu is unknown.
If its jsut about 8-part boni dont worry.