Not that I'm admiting defeat but I've even sent one of the 336 Texan's in for the "Cowboy Conversion" - 24" octagon barrel and forend. I haven't heard back yet but I'm optimistic they'll be able to do the conversion - I'll write a full report when/if it happens.
A lot of us enjoy the quick handling and portability of a carbine. We spend more time carrying it than shooting so it really excells for field use. The downsides are muzzle blast, increased report, shorter iron sight radious and a small velocity penalty with some loads.
Now that I own both extremes the contrast is more evident, and the longer barrel is winning me over. Offhand the front sight just seems to hang on the target. The long sight radious doesn't require me to squint. The report, especially the subsonic loads, is greatly reduced. The chronograph has higher numbers and the gap in velocity is higher at the full power levels. Another bonus is the extra-cartridge or two that can ride onboard - "load on Sunday, shoot all week."
There is a small weight penalty and I've complained in the past about hunting thick stuff with longer barrels but my view on that is softening and I may take one of the Cowboys hunting this year.
A fun "Gallery Load" that shoots well at out to 25 yards and OK out to 50 is a '0' buckshot over 3 grains of Bullseye. It is very quiet and averages just over 1000 fps.