I don't do bariton horn, but I do play baritone ukulele.

Why?

Because my fingers are too short and stiff to play guitar properly, too fat for narrow-neck guitars, and other ukes are tuned differently (about a fourth high, so a G chord becomes a C.)

So now I play the Dark Uke. Four strings are a lot easier to manage and remember fingerings for than six, even if the F chord is STILL a b***h and a half to play. (I end up faking it half the time it's needed, and play in OTHER KEYS as much as possible.)

I'm a folkie, not a band guy, so I play mostly to accompany myself or others singing, and it's a lot of fun. We used to have a group that would meet every Saturday at a really nice little Irish pub to sit down for a couple hours of jamming. (Can't get together anymore, of course, and meeting online is just asynch enough that you can't have people play and sing together which was nine-eigths of the fun for me.)

On the other hand, I went ahead this summer and sank a bit of our federal largesse into a new toy -- an eight-string baritone uke. It's kind of like playing a 12-string guitar, set up the same way, only with four doubled courses instead of six. Freaking beautiful sound.