It would still require Gigue to effectively strike over his own body, Sigurd strafed to Gigue's right when he was in mid-air, so unless Gigue first ensured he compensated for that side-step before running forward he would be approaching from Sigurd's right and attacking his shield in his left hand, at least as far as I understand the scene. Unless he was aiming for the very far right edge of Sigurd's shield, which wasn't really the vibe I got.