I say go for it! If you have the money to apply, go right ahead and do it. It can't hurt you.
I will be apply to school that don't require the pcat too. I don't know if i even have a chance but i figure I could learn from it and if i reapply next year then it'll show dedication. i missed the oct pcat, but will be taking it in january. If i do well on it, it will only strengthen my apps with the schools that require pcat (since my gpa is 🙁 ).