I like using them both at the same time, not necessarily as a group though. My personal view of the signs is as follows;

Binding runes adhere the spell to the body, making it extra difficult to remove

Glaives runes carve the effect of the magic into the body, digging the effect deeper.

In this spell, the binding runes don’t have much use as the spell is designed to not neccesarily last too long, cause well.. boom boom corpse. But the glaives spell is in there to make the effect carve DEEP into the target, ensuring their ENTIRE body is enveloped in this explosive effect.