When reading papers I find useful to have citations numbered instead of a key or the author name, since then it's easier to look them up in the bibliography at the end of the document.
On the other hand knowing the author's name along with the number at the citations' place is helpful too, since it may hint that a given author is involved in a series of papers dealing with a specific aspect of the problem you're describing, making her name easier to remember to the reader.
How do I achieve both in LaTeX? In practice I'm trying to get
as seen in [1 - J. Doe et al] ....
at citation's place, and
 John Doe et al, ....
in the bibliography
and would you consider it a good compromise?