No, he definanlty wasn't used to the mist. His expression when she stepped into said mist had clarified that fact for her. Again his reaction didn't surprise her, as Sabel had done everything to avoid the mist, like Raiden was doing now, when he dueled Danika.

She would have to get him into the mist somehow. Hm.

Being one who was skilled in non-verbal casting, preferring it over speaking her spells, she easily recognized the spell that Raiden had sent. As comfortable as she was in the mist, glisseo just didn't go well with it. Not one bit.

She took a careful but quick step back, making to move out of the mist and musing over how to remove the glisseo without removing the mist. She quickly regretted her actions as the trip over one of his jinxes.

And she was sliding. Just lovely. Blink rapidly as she readjusted to the mist, she sent a confundus charm his way, and spun so that she was on her knees. Aim not so true as she was more focused on ceasing her sliding. And returning to a standing position.

Being on your knees in a duel was not good.