Well if you're not trying to keep the coat, then I honestly wouldn't worry much about a spray! The primary reason for using a spray is to minimise the coat breaking with the friction of brushing (by lessening the friction!) paticularly in those show dogs where every lil hair is precious!! heh.
I don't use a spray on Paris at all, I brush her dry. I know the coat will be breaking to some degree, but at the same time she has over 5 inches on her hocks and neck... lol. It's more of a problem if she has tangles, THEN the coat will really break. So basically, keep them free from tangles as much as possible and you'll go a long way to keeping the coat nice without worrying about a spray.
JMO