The only issue for me at the moment is that I am not ready to put tires on it for the fall. Probably yes in the spring though.
I don't want to buy a set of tires now and have the clock ticking on the ageing of the rubber over the winter.
The other issue is that there is not a matching set front to back, which personally doesn't bother me, and the concern is that since the 15" are going the ways of the Dodo birds, the Michey Thompson may get discontinued also.
I'm not sure I want to run comp tires on the street. The rubber compounds are too sensative to temperature and as a result could be letheal until the warm up. How do you warm up a race tire when it is 20 degrees F?