Rap, I think you've come a long way.

No, the dual relationship is tough in any sense of the word. It wasn't allowed for quite some time, and only became somewhat acceptable due to very small towns and the need for therapists! It isn't the ideal situation though.
Anyone can imagine how it would be to be a friend of a doctor, but what happens to the therapeutic relationship? Friendship puts an extra strain on the therapist, and it weakens the effect of the therapist's knowledge and expertise for the patient/client.
(AND who hasn't wished they didn't know so much about a person that they used to like until they found out!?)
Never forget that the patient/client might be testing you to see if you can hold good boundaries. They might have some serious stuff to share, and are building their trust base. If you're a pushover for the simple rule of "no calling me at home," then how will you fare with the more serious issues?
Everyone will have their own opinion on these matters. I hold to mine for good reason.