Lighter feel at the lever more room between the inner and outer to get your cable lube of choice in there and less drag between inner and outer.
Use gear inners on my Shimano st2200 shifters on my monstercross and no problems. As long as the cable nipple can’t pull through the hole it’s fine – only shifter it wouldn’t work on was a versa drop-bar shifter for an alfine hub nipple got jammed and couldn’t rotate.
Oh and don’t bother with inline adjusters in the outers, pad adjustment at the caliper is all you should need. The adjusters just gives the carp another opportunity to get into your cables.