I'm not a huge fan of bling.
Often single sided swing arms are accompanied by a wide tire, which I don't like.
I'm not a fan of extended swing arms or lowered bikes, unless they're set up for drag racing, also 2 more things common with the single sided arm.
I'm also a bit of a symmetry freak, and well... the single side swing arm, isn't the same on both sides!!
I don't HATE any of these things, I just wouldn't do it to my bike, or recommend it to any of my friends, and at a show...
I'd gravitate towards the more performance modded, actually drivin balls out, track day going bikes to drool over.