Not sure why you think they would look any different than how the '09 cvo's looked when all the folks put tourpaks on them. I think they will look just fine with a full size tourpak. Same would hold true for the street glides in my opinion as well. Now the added cost would bite but hey I did that on my '09 so been down that road before.
Well, I say this because I think the whole approach on this year's crop of CVO RG is to go for the more bad azz/vicious look with the black out, skulls, and all. Especially on the Maple/Black, it will take away from that theme. Maybe on the Skunk or Blue Ball is might work but again for "look" I think the chop pak can be considered.
Of course you can always run naked around the city and then throw a detachable king pak on for the road. Who cares if your styling when your touring (lol).