In my experience it is fireblight just like its parent comice is plagued with Question the History of a pear or know some history? Post it here! - #76 by clarkinks
You will notice paragon arrives on my list in the what do i do with it category. I cant recommend it but i want to. It gets fireblight and dies and someone will be unhappy. Most people like comice but not everyone loves bosc or anjou but they are really good!
Harrow sweet taste like a better bartlett its just smaller. It will fruit for you in the second year.