Noah Lukeman, in "The First Five Pages," says that a writer shouldn't start the opening scene of a novel with dialogue. I've heard you mention that it's easy to have too much backstory before dropping into conflict. Do you share Lukeman's opinion? I know there's probably a happy medium--you don't want to slap readers on the ass without some sort of orientation, but you also don't want to put them to sleep.
I like leaping into the fray asap. If that means dialogue, ok. I'm not put off by it at all.
That said, Frederick Busch opened NORTH and Lee Child opens most Reacher novels with narrative.
Do what works. You may have to write it a couple ways, ok a dozen, to know.