Slashing Grace and Martial Versatility

[Hawktitan]

Can Martial Versatility be used to apply Slashing Grace to a weapon that wouldn't normally qualify?

Example - a Human fighter takes Slashing Grace on a Sibat. If Martial Versitial is then taken would Slashing Grace apply to weapons in the spear group that would normally not qualify such as the Trident, Shortspear or Longspear?

[blackbloodtroll]

Well, as long you were wielding said weapon, in one hand.

[Hawktitan]

You can wield certain 2-handed weapons 1-handed with various archetypes, such as Titan Mauler and Phalanx Soldier.

[RumpinRufus]

A pertinent question: Is any weapon wielded in one hand considered a one-handed weapon?

For example, while using Jotungrip on a greatsword, is it considered a one-handed weapon while you are wielding it in one hand for the purposes of Slashing Grace, or is it still considered a two-handed weapon?

[ElementalXX]

I think the feat is clear on the "weilding it one-handed" part. For example, you can "weild two-handed" a one handed weapon, its still a one handed weapon tought. If you somehow "one-hand" a two handed weapon, its still a two handed weapon. But the feat doesnt ask you to "weild a one handed weapon" it ask you to "weild your chosen weapon one handed"

Slashing grace wrote:

Benefit: Choose one kind of one-handed slashing weapon (such as the longsword). When wielding your chosen weapon one-handed, you can treat it as a one-handed piercing melee weapon for all feats and class abilities that require such a weapon (such as a swashbuckler's or a duelist's precise strike) and you can add your Dexterity modifier instead of your Strength modifier to that weapon's damage. The weapon must be one appropriate for your size.