[Aerich]

Yes, they can be quite an offensive powerhouse with a blunt weapon in the Vale. However, like in IWD2 but to a lesser extent, you have to be careful that they don't get into a tactical situation where they are the main focus for enemy attacks. They can still use "two weapon fighting" in heavy armor, but a magical shield can take significant points off your AC, leaving a ranger a bit more vulnerable than your standard tank.

Also note that there is no extra damage bonus given to two-handed weapons, so there's not much point other than overall party weapon diversity not to use a one-handed weapon and a shield.