I think bottom line is that you may have no problems running no filter, BUT if you wind up sucking up sand or a pebble and it winds up chewing the insides of your motor up, you might kick yourself for not running filtes.I run my daily driver with the sock filters. I have run the car without them a couple days to see the performance and sound difference, which is definitely noticable.
So, I shouldn't worry about minor dust and/or dirt?
I'd hate for sand to get sucked in my engine!!
What are the immediate and long term dangers of running without the socks/filters?
I have to admit, it's SO much better to run without them!