Arcane Duelist (Bard) and shield use

[Kuhani]

I play a Viking-type bard, who appears in battle to be a fighter with buffs. He wields a spiked darkwood heavy shield (which counts as light for weight purposes) in his off-hand and a one handed battle ax in his main hand. He has TWF.
I'm wondering if there is a way to have him grip the ax, while staying in the arm strap, for that extra oomph (1.5 strength) on certain occasions. Roleplay is important so it has to make sense in game. So action-wise perhaps he is letting go of the grip strap while keeping the arm strapped in, if gripping the weapon while still being in the grip doesn't seem plausible.
My GM and I are looking at perhaps creating a situational feat, enchantment, etc, and I thought I'd get some messageboard feedback as well.
A heavy shield that is made of darkwood weighs that of a light shield. A light shield's weight allows the weilder to carry something in that hand, but not wield a weapon. The weapon would still be wielded in his main hand. But a bit of extra power would be applied with the off hand (.5 strength).
Any thoughts would be appreciated.

[Chess Pwn]

Use a buckler. Other than that there's no rules. Also this probably should have been in advice. rules is more for clarifying a rule. Advice is getting opinions of how to do something.

[LazarX]

Chess Pwn wrote:

Use a buckler. Other than that there's no rules. Also this probably should have been in advice. rules is more for clarifying a rule. Advice is getting opinions of how to do something.

You can certainly wear a buckler, but keep in mind two things.

1. You're toing to take a minus one to your two handed attacks because attacking with a buckler equipped arm imparts that minus.

2. Without other feats or abilities thrown in, you won't get that AC bonus from the shield when you are doing your two hand attacks.

[Morgen]

It sounds like this is for a home game. Why not just do it?

You should lose your shield bonus. You should probably take some sort of penalty like when using a buckler.

That's probably as far as mechanics need to go in a home game.

[Kuhani]

Morgen wrote:

It sounds like this is for a home game. Why not just do it?

You should lose your shield bonus. You should probably take some sort of penalty like when using a buckler.

That's probably as far as mechanics need to go in a home game.

Yes this is a home game with my husband and another couple, on the weekend after the kids go to bed. Not real strict, but I want to be fair mechanics-wise.