Strobes are good for a gloomy day but the real attention-getters are the 'wig wag' function for landing lights, where they can flash on/off.
There is a significant difference to an aircraft's conspicuity if they are heading towards you with those flashing away. I see it a lot in Alaska and it really does make a difference.
Lookout is a very poorly practiced discipline these days and anything to alert an aviator of a 'head to head' has just got to be a bonus.