Narcissistic personality, anti-social personality, and borderline personality are characterized as being part of the same cluster of personality disorders.

There are some features in common.

People with borderline personality disorder often appear narcissistic when they are caught in the grips of an intense emotional episode.

But: It passes.

And when one is not under great stress / in the grips of an intense emotional episode one can indeed be capable of great empathy.

Basically...

It depends on your theory of narcissism...

I think we should be wary of judgemental / negative characterizations...

Kohut talks about 'disorders of the self' which he also refers to as 'narcissistic disorders'. By 'narcissistic disorders' he intends to be talking about people who tend to regress under traditional psychoanalysis, and people whose main need seems to be one of MIRRORING / VALIDATION. He views narcissism as an understandable response to an INVALIDATING ENVIRONMENT.

Sound familiar (to those who have read Linehan's take on BPD???)