Provavelmente funcionaria mal. Skallagrim entra mais detalhadamente aqui:
Os quillons são muito grossos, a lâmina é muito pesada, os bits pop-out provavelmente quebrariam sob qualquer coisa mais pesada que uma pinça e, de fato, os pedaços que se encaixariam provavelmente desmoronariam com qualquer pressão real.
Dito isto, o wiki do Highlander tem uma explicação (sem fontes, da melhor forma que eu posso dizer), que a lâmina que vemos sendo montada é um "blade de prática" :
The Kurgan fought with an emphasis on strength and brute striking-power, usually attempting to end the fight before it began with a single surprise attack. He would stalk his opponents methodically until he was ready. Then, he would attack without even so much as a challenge. He used a special two-handed broadsword, which he eventually supplemented with a detailed replica that could be disassembled and packed away as needed for practice in situations where the original could not be smuggled in and had to remain hidden, usually in his vehicle.
That the two blades are not seen together does not undermine the logic and resourcefulness of having a practice blade, that while not strong enough to last very long in combat, would give The Kurgan time to get to the original. It also recognizes the cunning and survival instincts of The Kurgan, adapting to the need for discretion in modern times while keeping his skills at their peak.
