JD Edwards Address Book as sole repository for Customer Relationship Management data?

Have any of you with in-house, internally-developed Customer Master
Relationship (CRM) had success in using the JD Edwards Address Book
files as the sole repository for CRM data?
Or did you try it and decide that it is too cumbersome and challenging?


Our in-house, internally-developed CRM package that resides on the IBM
Power i is currently completely separate from JDE Address Book files,
and is synchronized via the F0101Z1 batch file process.

I envision some definite challenges in trying to eliminate the CRM
customer master.

Years ago I heard from James Lampert at Touchtone's CRM that their
package is totally self-contained, having its own tables for Address and
phone information. That design may be the best solution.
What say you?