No, but if the functionality is anything like DC (SmarTrip) or Chicago (Ventra) , the OMNY app may need to be released first. Those cards require an app to get a new virtual card or convert a plastic one to virtual.
No real advantage of one at this point: there's no exclusive OMNY-card-only passes like in Chicago, and tourists here can use open payments. DC only has a physical or virtual card, no open payment, and the online loads are delayed and only available at certain stops unlike OMNY