rerigged a Westsail 32 with Dynex Dux a couple of years ago. Haven't heard how it worked out but think it would be relatively worth while conversion if it will last in the sun. Weight savings is significant and strength is far superior to SS wire. They oversize the rigging
because of UV degradation, possible chafe and to cut creep to virtually zero. They use custom designed thimbles with splices to end the lines and adjust the rig with good old new fashioned deadeyes. The hardware
is expensive and so is the synthetic line so doubt there would be any significant savings over wire especially if you are replacing the turnbuckles. The splicing supposedly can be done by any competent amateur with a little practice. The rigging supplied by Colligo is pretensioned so has very little stretch.
These new high strength, low stretch synthetic lines don't like knots. There strength is significantly weakened by the short radius bends of knots and they are so slippery knots can slip.