I think that sums up Swaine entirely. he'd rather be ugly, dirty, ratty looking trash than have to feel the crushing burden of royalty. I mean, he's basically a coward throughout the whole game. Most of his dialogue at the beginning of every dungeon is either: "This is scary, let's leave" or "Oliver's got this"
Don't cut your hair. Don't shave. Wear the clothes of a hobo.
Remember, even Phoenix Wright was able to pull it off: http://www.gamefaqs.com/ds/930506-apollo-justice-ace-attorney/images/screen-6 http://www.gamefaqs.com/ds/930506-apollo-justice-ace-attorney/images/screen-15