As well as doubling the life of the wire, barring any kinks that is.
I run Okumas and Shimano Tolaras.
The Okumas are OK but the Shimanos are by far the best I've used.
If you allow loose wire on the Okumas, it can get caught between the roller and frame.
Keep tension on the wire at all times, which should be done anyway, and it's not an issue.
Good luck.
Glen