Not sure if having this as a consumable would be ideal, it would probably mean the combat will be designed such that you never really need the consumable (as the developers do not know if you have any at a given time), and players will tend to hoard it in their inventories in case it will be more useful later, and end up not actually using it. I rarely use Jet in Fallout games, for example. So, the impact of the feature on the gameplay will be minor. It would also make some sense for a combat oriented role or build to have such ability, especially if combat is made highly lethal like in the PnP (or the original Max Payne from 2001, for that matter, which made the concept popular), while other types of characters are encouraged not to engage in combat. But I would not mind the "Jet" style solution, either.