Sites and Webs based on custom templates will not be caught


I noticed the sites I deleted where not back upped as expected. I took a look at the sources and found that at installation the following happens:
  1. The delete event receiver is attached to every existing site collection and site
  2. A feature which adds the event receiver to a site is stapled to every known site template.
    The second part is the problem. Any new site collection or site based on a custom site template provisioned after the Recycle Bin feature is activated will not be back upped.