I think, given equal wood, I lean toward the satin finish myself as it seems like it may not show the scratches as easily although the gloss finish appears to be pretty tough.
If the gun has a typical, modern satin finish (as opposed to an oil finish), I would not get too used to it being satin.
These satin finishes don't stay satin too long. I received my BT99 as a 30 year service award in Feb. 2007, it WAS satin.
After a couple months of shooting/handling for trap each weekend, its gloss. Not that I mind at all.
I expected this since I had the same experiance with a Remington 870TC and a 20g Wingmaster, they started satin and are now gloss.
These are a mat coating that polishes up with use, the target guns that see a couple 100 shells/week "gloss up" pretty quickly