I used to do the same thing when I worked for Arrow Trucking back in 1993. I kept a 93 Rockhopper on the rack just like that.
The down side is, no matter how much padding you use the constant travel wrecks the finish under the rack arms. Also, You catch a lot of ribbing on the CB. Once at a truck stop in Stockton, CA, I got to bite back. I told'em I would leave to enjoy those dry sandwiches under the heat lamp in the truck stop while I crused down to a nice restaurant for a fine meal.
Good side is I can brag about riding in L.A., San Fransisco, Denver, and the Utah and California deserts.

I loved it. But one day with with another company, I had to pick up a load on a van trailer. The driver that had the trailer last had left the trailer much higher than I was used to and the pin jumped the fifth wheel and crushed my Rockhopper between the cab abd trailer. It took a lot of work at the LBS to fix that.