To Swivel or Not

I recently started using spoons such as the ACME Kastmaster and other
various spoons. What have you all found best; putting a snap swivel in line
or tying the line directly to the lure ? I have noticed a small amount of
line twist without the swivel. Another thought was to install a split ring
and barrel swivel to my spoons to keep the hardware length to a minimum. How
have been your applications?

Thanks,
Rick