A 4" revolver is a lot easier to use from a belt holster than one with a 6" barrel, and is about as long as you can use for concealed carry. If you have a CCW permit, there are a lot more places you can travel than with open carry, including many state and national parks, rest stops and urban areas.
A 6" barrel in an high-rise holster (e.g., a Bianchi BHL) will have the back of your thumb in your armpit by the time it clears leather. The best way to carry it in the field is in a shoulder holster (e.g., Alessi Fieldmaster), cross-draw, or in a western style holster with a drop (e.g., Tom Threepersons style). Of these, only the shoulder holster offers a reasonable degree of concealment.
For a 686 4", I have an IWB (Grizzle SDR) and an Alessi CQC "pancake" OWB on order. The Alessi will conceal well under a sweatshirt or mid-length jacket.
The key to recoil control (along with practice) is a good set of grips. I prefer wood grips like Ahrends combat-style (finger groove) or Hogue. You get good control with a little "give" compared to rubber, and wood doesn't stick to your clothing.
You lose about 75 fps compared to a 6" barrel, and the accuracy is a wash in my experience. I can shoot a 3" (or better) group at 7 yards with either barrel.