Feature? Combine 2 fields into 1 slug?

[PaulLawton227]

Great work on this field.
It would be nice to have a feature to combine 2 fields into one slug.

We have a table with staff members which have first_name and last_name and would like to create a slug from the 2 fields combined.

e.g. first_name: Paul, last_name: Lawton - results in a slug of paul-lawton
(The fields are separate so that we can sort alphabetically on the surname)