I have had three torties over my lifetime and they have all been skittish! And yes, they have all had "tortitude", big time!
Our RB family cat Lindy, was very mellow friendly kitty but our little girl Milly (though she was very affectionate at the shelter) is very jumpy. (Both torties)

Milly has calmed down since Milo has been in the house but she will still only accept limited affection on her terms. Though she is determined to be the boss cat in our home.

It really lightens my heart when she jumps up and sits next to me and as long as she is happy, I'm happy. She likes cuddles when we are in bed, we must look less threatening when we lie down. She jumps a mile if you touch her and she wasn't expecting it.

Is this tortie attitude ?