I didn't even know there were any 3rd party glasses out there for panasonic tv's, it would interest me if they were cheaper than the £130 panasonic want per pair for their active shutter glasses but my only doubt would be how good a 3rd party pair would be when compared to the panasonic ones.
I've already been waiting 5 weeks now for my supposed 2 'free' pairs from when i purchased the tv so a cheap alternative would interest me but performance would be my main concern but don't forget panasonic, sony, samsung and i think lg recently announced a joint initiative to produce glasses that are compatible across all those brands of tv and will be backwards compatible with all 2011 tvs.