So, Renfield is this drug, created by Vampires, Banshees, Nosferatus, Wendigos, Dzoo-noo-qua or Goblins, presumably just by drawing some of their blood and losing one point of essence, according to RW, p. 68.
It further says, that 'once the pawn has become addicted' and states that the addiction threshold is 3 for purposes of addiction tests (both physical and mental) as on p. 256, SR4A.
I'm considering doing this to (a) player(s), and a few questions came up in my mind:
1.) Renfield is stated to be mentally and physically addictive. What does a character roll? Wil+Log for mental, Bod+Wil for physical addition is clear, but do they roll both? One, but lowest, one but highest?
What happens if it's both and one test is failed? Is the character still addicted?
2.) When ingested, the character is stated to gain 1D6 points of essence.
What happens when this raises the character's essence over 6? Is there a limit of 6, or is it the vampire's limit stated in the companion?
3.) Characters who develop an addiction gain attribute boosts and an additional IP. Is this IP cumulative with other enhancements? Cyber- or bioware? Magic? Other drugs?
How do the weaknesses work? The dietary requirement and essence loss are crystal clear, but do those weaknesses disappear after kicking the habit? Is it even possible to lose the quality, be it by expense of karma or other means?
Taking 2. and 3. together, let's assume a character with implants and 3 essence left.
He takes Renfield, gains 2 essence and is at 5 now. Can he kick the habit (and let's say he loses 1 essence during the course of his cold turkey) and end up with a stable 4 essence, or is he cursed for always and ever with essence loss and no way to replenish it without becoming a vampire or taking more of the drug?
Mechanically, I would say that an addicted character gains the addiction quality (at mild at first) and the carrier quality for HMHVV I, as well as the weaknesses for as long as he's addicted.
Should he be able to lose the addiction, he retains the carrier quality (no healing possible), but loses the weaknesses as well, with his essence dropping to the lowest point at which he was before.
At this point, I only want to see if there is actual rules text on these issues before going forward with my plans, so I need a few opinions, or, if available, quotes or locations for these rules.
Thanks in advance