I wouldn't mind a decent explanation on Skill Speed considering nearly every piece of equipment in a Dragoon's armory has a shit tone of skill speed.

Is it's only purpose to speed up oGCD skills charge rate?

More importantly what's the cut off for it's use. Like SkS points to charge time.

If it doesn't help a DRG over all then there is really no point in SkS > Det/Crit on gear.