Honestly, I'm not really sure why you would want to create a fighter/scoundrel hybrid. Those are essentially the two opposing ways to make a melee attacker (A Tank type with high Strength, and a fragile type with high evasion).
They use different weapons with different primary attribute requirements. Fighters like a lot of Strength and Constitution, Rogues like Dexterity and Speed. It'll be hard - if not impossible - to get enough primary attributes to do both well.
The skills are similar, but are also restricted with what weapons they'll work with. Half your skills will be unavailable when wielding one of the weapons, meaning you'll have to switch weapons, which costs AP in combat.
My recommendation is to pick the weapon type you want to use, and then you can just put a point into one of the other skill sets and pick up a few skills that you can use from the other set with any weapon type.
You can use a Dagger + Shield, but that runs into the issue of shields needing higher and higher STR requirements.
The Dagger DOES only do one hit, but it's displayed as being split in half. That's why if you miss with one hit, you miss with both.
