This is the single biggest reason why i chose to run horns. The fact that i can put an 8" driver in a door and hide horns under the dash and still have an extremely good sounding system while basically having a 100% stealth install was a huge positive for me. And this is coming from someone who also had 10" midbass in kicks with giant holes in firewalls and fiberglass door enclosures for midranges and tweeters in waveguides on dash and just a plethora of wild install ideas.
I went to a few different SQ competitions and my very favorite thing was when judges would get in and listen, get out and look at me all confused like, "hey man, where are your midrange and tweeter drivers? And i'd be like..oh im running horns and they'd be like ohhhhhhhhhhhhhhhhhhhhhhhh. I think this is especially interesting when you demo it for other people. A lot of people used to get in my car back when i had 10s and a giant install and immediately start asking about drivers and enclosures and if they get in the way and just a plethora of questions. With horns though, it was like..sit down and just listen and i love that.
Also European competitions let you black out your car for that very reason..So they judge based on sound and sound alone.