So we may have a custom tech-marine in the warband soon and some questions came up.
The Tm gets the mechanicus implants (or some version of them). What we got stuck on was the potentia coil. Some say they have it (since its a major part of the cyber mantle they get) while some say its merely the normal power source of the power armour that powers everything.
1) So the questions. Do or don't Techmarines have a potentia coil, or do they use the power armours core?
2) If they don't have a potentia coil, does that mean that they can never take their armour off as all implants simply shuts down?
3) If they do have a potentia coil, presumably they also have the power armour cell too, or are techmarine armour made to be powered by the potentia coil? (Since it seems techmarines usually craft their own armour).
4) The Servo-arm seem to be grafted to the armour. Is it the same with other mechadendrites too and the techmarine looses them if he ever leaves the armour, or is the armour customized to let them trough? Are they truly implants then or are they simply a part of a customized piece of armour?
Thankful for any answers on the questions. Cheers.