Some Virtues (& Flaws) are "stackable", in the sense you can take them more than once and their effects just "add up": for example Great Intelligence X 2 and Weak Strength X 2. Note that I am not talking about Virtues and Flaws that you can take more than once to affect different aspects of the character, such as Affinity with two different abilities.
Now, there are a lot of ways in ArM5 to gain Virtues & Flaws, either permanently (e.g. Initiations and Ordeals, Warping) or temporarily (e.g. Faerie Wizardry, Maleficia, the powers of Gruagach, Learned Magicians, and various supernatural beings). I was wondering: can you just use the same "means" twice on a stackable Virtue/Flaw?
The answer could obviously be very different depending on the means. I would not allow the same Initiation script to be re-used, but I would allow two different Initiations to "stack". Warping ... well, stacking seems a good possibility. Faerie Wizardry or Maleficia? I guess that should stack; after all, the warping effect also stacks, if the Virtues are long-term. Gruagach or Learned Magician powers ... hmm, I'd be tempted to require two different spells/charms. The inherent powers of supernatural beings? I guess it depends on a case-by-case basis, but in general I do not see any reason to disallow stacking.
Hmm. So I guess that in general my answer would be "yes they stack" but if the Virtue Flaw is obtained through some specific "formula" then only different formulas stack. Opinions?