Synching BC's CRM data with external CRM

We're considering BC for our small business. Have created a test account and spent hours on a test drive. But we haven't been able to answer one question: If we use the CRM module to gather customer data, Is there a way to set up an automatic sync with the home-grown enterprise system we're building for our family of companies? BC offers some documentation on its API. But has anyone successfully created a method to export/import data via the API? If so, how difficult was it?