So, wouldn't this be similar to saying that Proven X grants Unnatural WS/Unnatural BS +X (cumulative with other sources of Unnatural WS/Unnatural BS) when using the Proven weapon? Sure, it halves the amount of DoS bonuses (which isn't a bad thing), but it remains consistent with the other rules in the game and helps with certain talents based on the WS/BS bonus.
IOW, the ability of Feral World characters grants them Proven 3 with low-tech weapons. With a basic sword in hand, this would be the equivalent of resolving any attacks with the sword as if the wielder has Unnatural Weapon Skill 3 (adding to WS bonus for relevant talents and adding 1 bonus DoS to successful tests).
Edited by HappyDaze