I haven't met professional LIIs who could be described as scraggy although I did meet one with an actual body odour condition that could water ones eyes by mid-afternoon. They usually seem to appear well-kept but nondescript; if they were fashionable, it was by accident but none were obese or revolting. The look that most LIIs seem to prefer is invisibility and what you describe wouldn't achieve that; now, many ILIs seem to like a counter-culture appearance.........
a.k.a. I/O