here is a link to a NAIMA document i think you should check out.
this link has useful example pictures: http://www.metalbuildinginsulation.c...mePoleBldg.htm
as mentioned your truss diagrams have the limits of loading within the truss. overloading the loft trusses or loading in the zero zone can cause issues all that dead load gets transfered to the bottom chord on points of the web not spread out to the air. questions on the camber and strength or how to read the engineered diagrams you can refer to your supplier. would never use household kraft faced fiberglass in metal sheathed and roofed pole building.
i wouldn't assume you have room-in-attic trusses, most common is a storage-in-attic truss big difference, storage-in-attic truss is not designed to be finished beyond a loft floor - big difference! if room-in-attic trusses they still are limited to loading and finish materials especially metal pole building.
good luck to you.