[Zope] Multiple CookieCrumblers

I am using CookieCrumbler as an authentication method on a Zope site. I am looking at the feasibility of putting multi CookieCrumbler objects (all with the same settings -- except for the cache setting) on a site in order to allow some parts of the site to be cached in an upstream proxy and forbidding others. Is this a reasonable thing to do? Will it achieve the result I am looking for?