Possession spirits, A few questions Options

[MadPiper]

I am a complete newb, so please bare with me!

1. If a spirit possessing you has banish resistance as a power, does that apply if someone is trying to banish it when its possessing you? Its a passive power right?

2. At the cost of a service I can use a spirits power (that is has) on myself and/or teammates (if the power allows), However if the possessing has the power endowment, I can have it endow a specific power on myself that I can use as long as I wish, as long as I am possessed by that spirit.

3. If a magician cast a mana spell with the target being the spirit inside of me, do I get to roll counter spell against it since it is inside of me? (without stating I am defending?)

4. Is it even worth taking the binding skill? Since I lose a service every 24 hours anyways? What would it be, 3,000 nuyen for a weeks binding at best?

I will probably have more later, but this is what I can think of off the top of my head. The possession FAQ answered many of my questions. So who knows, this may be it hehe.

Thanks!