I have created a company profile item type that includes custom fields related to the company (company name, company contact, phone etc) which cannot be done via the normal article manager.
All custom fields are integrated into the article content body and are also available via the database table.
Would be even better if this was incorporated into the native joomla admin interface but hopefully this kind of functionality will be included with Joomla core soon.
Well done and thanks for a great extension!!