Well I have been running my first dual setup(PVS-14's with dual adapter)for a couple months now I really like the dual eye setup for walking around and driving. The down side was the weight of two PVS-14's plus adapter isn't lite on the helmet and I could feel my neck tighen up after a hour or so use even with counter weights on the rear of the helmet. Still its a nice setup since I can do anything with those 14's dual,single,weapon mount,camera mount and so on. That said I was talking to ASM Night Vision(Frankie)and he had several sets of ANVIS 9 and 5050 true dual systems instock and gave me a great deal on a ANVIS 9 housing,mount,battery pack which I installed two L3 64lpmm 29+ SN tubes that matched well. I must say the Anvis 9's feel very lite compared to my dual 14 setup much better balance and the front lens seems to need less focusing for changeing viewing range compared to my 14's. I am going to the Wilcox single 123A battery pack soon but overall after some testing last night I am very happy with the setup. I know the BNVD and PVS-15 style systems are tougher built ground dual systems but that said these Anvis 9 with mount are really lighter weight than I expected. I dont think its much more than one PVS-14,Dual adpater, and INVG mount all togather. I am going to check the weight of each system mounts and all later tonight just to know.I have to give thanks to Frankie for all the help and making it possiable for me to afford these ANVIS 9 goggles plus he took the time on the phone last night to coach me on tricks/tips installing the tubes plus how to setup use the ANVIS 9's correctly. Here is a Iphone pic of the setup: