In my experience, Scilla luciliae is extremely invasive. I've seen it seed into neighbouring gardens and into a local park.
It's likely a contributing factor that S. luciliae is poisonous; hence not bothered by voles and the like.
I realize that we gardeners often have very different tastes, but for me, I deeply regret that information on this bulb did not include a warning. It's taken several years to remove it from the gardens I planted it in.