You're very welcome,LCSNM, glad to help.
I've none of these, but most makers furnish ONE tube in each constriction. Ruger does offer two skeet chokes with its new SXS, but they are the exception.
Dunno if there's aftermarket tubes available.IOW, you'll not be able to have both barrels Full/Full, or IC/IC or M/M.
But....
Most folks don't want the same choke in both barrels. Usually, one works for close shots, one for farther. A two triggered SXS has instant choke selection.
Example, you move in behind the pointer and the covey flushes. Focussing on one bird, you drop that one with the right,I/C barrel, find another in your vision and take it also. The first was shot at 19 yards, good distance for I/C, second at 28, good for Modified.
Or, as the guide says "Take them" you stand up in the blind and swing on a goose. Knowing the closest birds will be within range for a moment longer, you use the left barrel with it's Full choke to blast one of the farther honkers, then go to the front trigger and the Mod choke to take a "Candy Bird" still near the decoys.
THIS is the big reason doubles are still the choice of many hunters. Instant choices, IF you have two triggers. A selective single trigger can be preset, but it's not quite as versatile.
HTH...