Indeed, they have several combos which only require three strikes instead of four, making them harder for enemies to interrupt. This is especially effective if the player holds the stab button until the enemy is locked in an attack animation too far away to hit him. Such enemies may simply be stabbed at to keep at bay, or baited into a premature attack which Henry may attack into without being countered. It also has the longest range out of any type of melee weapon, except for the polearms. This type of sword requires strength and is balanced between stabbing and slashing damage. And although you are not able to perform longsword combos, you are however still able to perform one-handed sword combos that work with shields.
Longswords are a type of weapon in Kingdom Come: Deliverance, which are held in both hands, however, though you can use both longswords at the same time as a shield or a torch, the speed at which you swing the sword is slower.