If "GZIP Compression" is enabled and a client supports gzip or deflate compression then all javascript within a theme will automatically be combined and compressed into a single request. 

Enabling this is recommended for most people, as it reduces the number of requests to your server and speeds up javascript on the client side.

The configuration option "Enable GZIP Compression" must be enabled for this to have any affect.

<b>Recommendation:</b> Yes