Phoebus Alexandros wrote:
Let's break this down:
Gorum's Swordsmanship does allow a Chaotic Neutral barbarian or fighter who worships Gorum to apply the effect of the Vital Strike feat to an attack [he makes] with a greatsword at the end of a charge.
Martial Versatility allows [that barbarian or fighter] to use [Gorum's Swordsmanship] with any weapon within the same weapon group--in this case, the heavy blades group.
Lances only exist in the polearms and spears weapon groups, however, so as things stand the character in question could not use Gorum's Swordsmanship with a lance, and would only deal double damage with a greatsword in conjunction with the Spirited Charge feat.
Vital Strike allows you to roll the weapon's damage dice for the attack twice, but the Damage section in the PRPG Core Rulebook (pg. 179) tells us that "Extra damage dice over and above a weapon’s normal damage are never multiplied."
With all that in mind, a Chaotic Neutral barbarian or fighter who worships Gorum and has all the above feats could make a mounted charge with a greatsword and deal 4d6 damage (2d6 from his greatsword multiplied two times, as per Spirited Charge) plus all the appropriate bonuses. He would then add 2d6 damage from Vital Strike (but would not multiply it).
In order for the character in question to get the full benefit of the Spirited Charge feat, he would need the to would need to add the Versatile Design Weapon Modification to his greatsword*, so that...
That was very helpful, thanks. One question: Why can only fighters and barbarians use Gorum's Swordsmanship? From what I can tell, only the alignment and worship are requirements. Fighters and barbarians can optionally choose to take the feat by replacing a bonus feat or rage power.