Hollywood versus Reality: Running with a handgun?

[boomerhc9]

To preface the question, I have done movement drills with rifles, but have not done much beyond engage and holster, move drills with pistols.

I watched a variety of Hollywood fluff and always noticed folks running with pistols drawn. Does anyone really do that?
Just my thoughts, but for those of you with more experience is this a training scenario that happens?

just re read that. it's more than just the norm in uspsa. In production division for example, you are limited to 10 rounds per mag. If you're mooving, you better be doing a reload. nothing more wastefull time wise than a flat footed reload.

and as such, you kind of need the pistol out of the holster.