Is it worth going this route with a two-bladed sword? Because of it's double weapon property, the sword helps in reducing the TWF penalties.
Sword, two-bladed 100 gp 1d6/1d6 1d8/1d8 19–20/×2 — 10 lbs. S double
Double Weapons: You can use a double weapon to make an extra attack with the off-hand end of the weapon as if you were fighting with two weapons. The penalties apply as if the off-hand end of the weapon was a light weapon.
Well, half elf would be the same as human in that respect, since you would need to have EWP anyway to use a two bladed sword. Half-elves get that feat in an alternate racial trait. So you would end up using your bonus feat for something the half elf gets for free anyway.
Besides the EWP, why do I not see more people suggesting this for TWF? The weapon does the same damage as a pair of long swords, but it counts as a onehanded weapon and light weapon for TWF. Aside from possible cheese (which never stopped people from wanting to dual wield pistols) I see nothing wrong with it specifically.
Sure, many TWF builds are based on weapon finesse, but this could be perfectly legitimate of a strength based build. Well, thinking about it, the TWF feat chain do need a decent bit of dex to qualify, so that could be an impediment for anyone more strength focused. Maybe on a build with little to no armor so that a high dex would not be wasted.
Really TWF, Monks, and such are more for Rolled Ability Scores(RAS) rather than Point Buy Stats(PBS).
If you have the Stats or the ability to get the Stats then this build is really nice.
You can also draw the Weapon as only one weapon which isn't much of a boon for a Full-BAB character.
It really is a nice weapon to use though a lot of people find Double Weapons ridiculous despite the fact that they did exist and refuse to use them as they don't want to seem foolish.