I actually prefer the rope only trim line, here are my personal reasons before you shoot me down for not liking the sheath, i have used both types of trim lines over the years and always prefer bare rope!
It feels better when sheeting and does not stick, plastic coated lines never slide as smoothly.
You can see any wear and change the lines before a snap. With the plastic covered lines they can be rotting away without any warning signs. In some instances they will not dry as fast which can also cause rotting.
Rope trim lines are usually easier to change.
Rope trim allows for the use of sliding stoppers that work, very handy for spinning the bar on the way down from kiteloops.
Don't blame the rope for breaking most of the time it is a poorly designed union geometry that wears the rope. Some brands just seem to overlook this important part of the bar, take North, brilliant bar even down to the plastic insert in the union but totally the wrong geometry that wears the crap out of that part (embarrassing)!
My Blade uni bar has had a huge amount of use for over a season by myself and as a loaner, the trim line does not look like needing a change for at least another 6 months.
Shane75 if you send me some detailed pics of your bar, details of model etc and your # ill see what i can do for you.
From the look of the pics this bar looks like it has not been anodised correctly, if it had there would not be that type of corrosion.
[email protected]