Dome and Scene mostly but it depends on the location and how much shiny stuff is in the scene and how particular I want to be.
With dome enabled it will effect shiny bits even in an enclosed space.
This can be useful if you want to recreate an indoor setting without having to model the whole thing but you do have to choose the right HDRI for the dome, with an outdoor image you may see clouds and grass reflected in your shiny bits.
For authentic indoor, if fussy, use scene only and set up the the lighting to suit. Metallic stuff can appear a bit flat though unless you add a slight bump map to it.
As Hellboy suggests it probably best to test under different settings but you can't cater for every possibility so if you get it to look right in Scene Only mode with a decent neutral lighting rig I'd say you're good to go.
PS: Because I gathered from another thread you haven't been in DS land long just a couple of tips on lighting that took me a while to figure out:-
Always add a camera to the scene and render from that, the default Perspective camera does not always follow the same lighting rules and may not give you true results.
Check the Headlamp for the camera is Off. The default is Auto which should turn it off if there are discrete lights in the scene but that does not work for emitters and the headlamp can flatten things just like the flash on a camera.
If you want to use the headlamp for a bit of fill in turn the intensity down and add a touch of X and / or Y offset for a more natural look... BTW does anyone know if if the Z offset is of any use, I did have a play but it does not seem to do much.
I'm just here by mistake, for a friend, for science... anyway you can't prove nuffin'.