The bottom line here is Koverall without paint weights about 1/2 oz less than Monokote , it's hard to image it will ever come out finished less than Monokote. As far as .6 oz cloth there's really no comparsion because cloth requires full sheeting while Monokote can be installed over open bays, nothing weights less than air. Each covering method has it's own merit. I would bet even the above average modeler would find it difficult to produce a fabric or glassed model weighting less than the Monokoted version.