Hey Rod,We have used both for standing rigging, halyards and lifelines. Excellent results and durable ropes.
When adding a cover if you need to make it a double braid, may need to work quite hard on the core to core splice to finish the bury, but it can be done.
DUX is slightly stronger, but if you stay within the safety range based on the application, it should be fine to go either way. As single braids, they work similar to Amsteel, Endura 12 (STS) and Marlow D12.
The coating is not sticky and the main physical difference you'll find is that the are a little more stiffer than the standard DSK single braids and, therefore, you may want to have a larger bearing point when using the splice, such as a thimble, low friction ring, etc.
More people may elaborate more. Bam Miller, Mark Vannote?
I was just checking the forums out and saw this. Got myself a different job. I am still happy to help out with any rigging questions but am not on here as much as before.