User blog comment:Lukeatlook/Pyro's Item Overhaul 4 - Welcome To The Jungle/@comment-4434378-20140412145214/@comment-5331854-20140414152451

It all depends on how long being out of combat is still "combat-time with monsters" is defined, similar to how long before you count as "out of combat" is not fixed for champion abilities. With the current monster AI, though, you easily could get 5% out of it when you define a monster chasing you as the effective "combat-time", making potshots good sources of health.

This is important to know, since getting to the Golems, the Wights and the Wraiths doesn't require much footwork. This is especially important in case of the Wights, who are just a few steps and a skillshot away from getting free sustain, which is a bit less travel-time than for the Golems (giving Blue Top and Purple Bot a slight edge in defending the 2nd tower).