MMH5.5 - Heroes of Might and Magic 5.5

vasik found out that a unit with a whip strike attack and the Berserk spell applies Berserk for 3 turns; we discussed this in the ncf thread a long time ago.

So, for example, if the Shadow Mistress's Whip Strike ability casts Berserk, it will have a duration of 3 turns instead of 1?
Whip Strike spells are cast at advanced mastery if I am not mistaken?