Strike Barren (spell) vs. Elixir of Fertility (alchemy)

[ehrbar]

Just wondering if there's an official rule or ruling anywhere on the interaction of Strike Barren and the Elixir of Fertility.

(If there isn't, I'm going to rule that the former's "Renders infertile any subject that was capable of producing offspring" is outright trumped by the latter's "Except for Sexless characters, offspring will result from any natural union made during the elixir’s duration.")