I would save the extra money for something else. Ran the steel on my 04 for 6 years with no problems. Don't see how the Talons could be closer than the steel ones on my new 15 Ram as there is less than 1/2" clearance to the bed.
You probably won't use the end caps any how since it is just something else to worry about. Have been down some muddy roads without the inserts and never had a problem with dirt getting in them.
And with your setup, saving 25# at most isn't going to be an issue. Especially with a dually.
