The Shinko 700 Series dual sports tires feature a 60% on-road and 40% off-road aggressive tread pattern???for better dirt riding performance without sacrificing pavement grip.
Heath Says: "The Shinko 700s are a great "50-50" tire for the money. They're a little more dirt-worthy than the 705s and still dirt cheap."
The 700 Shinko only comes in a tubeless configuration. The only bikes that I am aware of the can truly run a tubeless 21 are some of the GS Airhead BMW's. That might make up 1% of the motorcycle ever sold. The Cycle Gear Clerk did not make an error in my opinion. The amin point is if you are in doubt you will not be comfortable. I would call the store and talk with a manager.
The Shinko Website is a good source of information. Pull up the model of tire, find the size and click on the wrench and it will tell you if it is suitable for your bike.