Not sure I'm understanding you. The E-cat SK has not been mass produced. Perhaps just a handful out there, in a pioneering phase, or field trials if you will. When the remaining bugs are worked out then Rossi could step up the manufacturing. So no abandonment, just evolution Rossi style. The Leonardo mod of the SK could totally replace the simple SK, or maybe not. Seems to me the Leonardo version's most important applications would be to gridless locations or else to provide unequivocal demonstrations of energy production.
Don't discount mobile applications.