A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
A player, 13 February 2012
viewtopic.php?p=1271875#p1271875
Doji Shigeyuki: Battle: Target a Personality with lower Personal Honor than Shigeyuki's Chi: Shigeyuki challenges him. He may refuse; if he does, move him home. Both Personalities use their Personal Honor as their duel stat. Bow the duel's loser's unit. http://rules.l5r.com/EE_Challenges_and_duels "Effects may specify a different stat to be used by one or both Personalities in the duel. A "duel of Force," for example, is a duel in which both Personalities use Force instead of Chi. "
If Shigeyuki challenges my berserker, and I delay the effects, am I correct in assuming that the effect that makes my personality use his personal honor as his duel stat is delayed, since that is an effect on my berserker? (Leading to a duel of Shigeyuki's personal honor vs my berserker's chi)
Also, I'm not sure if this is intentional or not, but Shigeyuki doesn't have a duration on that effect and nowhere in the rules wiki can I find anything that limits the duration of an effect that changes duel stat, is my assumption correct that (Shigeyuki/target) use their personal honor as their duel stat for any further duels that turn?
Alex Jones (rules official), 14 February 2012
viewtopic.php?p=1271875#p1271875
Doji Shigeyuki: Battle: Target a Personality with lower Personal Honor than Shigeyuki's Chi: Shigeyuki challenges him. He may refuse; if he does, move him home. Both Personalities use their Personal Honor as their duel stat. Bow the duel's loser's unit. http://rules.l5r.com/EE_Challenges_and_duels "Effects may specify a different stat to be used by one or both Personalities in the duel. A "duel of Force," for example, is a duel in which both Personalities use Force instead of Chi. "
If Shigeyuki challenges my berserker, and I delay the effects, am I correct in assuming that the effect that makes my personality use his personal honor as his duel stat is delayed, since that is an effect on my berserker? (Leading to a duel of Shigeyuki's personal honor vs my berserker's chi)
Also, I'm not sure if this is intentional or not, but Shigeyuki doesn't have a duration on that effect and nowhere in the rules wiki can I find anything that limits the duration of an effect that changes duel stat, is my assumption correct that (Shigeyuki/target) use their personal honor as their duel stat for any further duels that turn?
"Both Personalities use their Personal Honor as their duel stat" is not an ongoing effect on either Personality, it is a change to the resolution procedure of that one duel.