I grew up doing a lot of shotgun shooting, in the era just before screw in chokes. During my high school years, besides hunting, I averaged about 5 boxes of shells a week, shooting informal trap in my back yard.
Nearly all of my shooting was done with a 1920s made Winchester Model 12, 12ga, 30" full choke. The rest with my Grandfather's 1909 Ithaca double, 26", choked full & full. These guns were choked to deliver "full choke" patterns (70% in a 30" circle @ 40yds) with the old paper shotshells, with their card wads, roll crimp, and no shot cup.
By today's standards, they would be considered "extra full" or "super full" choke. When I started using a gun with a modified choke, my misses went up alarmingly. I suspected that my misses were because birds were getting through "holes" in the pattern that my full choke guns didn't have.
It might have been that because I had worked so much with my old guns that I just shot them better, but I felt I was shooting them all equally well, so my misses HAD to be because of the more open pattern. As a result, I never developed an interest in, or a good use for more open choke guns.
I know some people find the different chokes very useful, I just never did. Having the ability to change the chokes just further improves the versatility.
One thing to be aware of, you should remove the choke tube once in a while. Swap it for another one, or just take it out and put it back in, either is fine, but you ought to do it, once in a while. Not because you need to, and not for cleaning, but just to ensure that you can.
In the early days of screw in chokes, many guns showed a tendency for the choke tubes to become "hammer welded" into the barrel. One Browning I saw required the dedicated effort of a good gunsmith to get the choke tube out of it after only a single season of shooting.
Supposedly, this issue has been fixed in more recent guns. (I think they make the barrels and tubes a little thicker now days...) Anyway, can't hurt to check them once in a while. The time to find out you can't get the darn thing loose is at home, before you go afield.
I haven't seen the bird that will wait until the shooter changes from IC to Full choke.
This is where the double barrel shines. Need a different choke for a particular shot? Just pull the correct trigger! Nothing is faster. Its the getting off a fast 3rd shot where the double tends to fall behind...