Let look this way...
..................... >> In client side, impossible to be detected by admins, but suspicious enough........... >> 90% of permanent
Model coloured >> In server side, you get to use what you will get from RP server........................... >> ban done by root
......skins........ >> Is running off on client side only, VAC ban highly likely...................................... >> admin, or VAC'd
..................... >> Huge disadvantage of playing RP..................................................................... >> your expensive
..................... >> You're loser for doing this............................................................................... >> account.
Beside I used to do this on CSS before, and I don't even like it at all, i mean the colour on the skin running around the map are ridiculous enough not to use it again.