I scale front wheel before shipping. That was 480g with tape. Tape is approx 10g each wheel. Rear wheel have cassette mounted, so scale was not possible, but rear wheel should be 110g heavyer then front. So real weight should be 1070g with tape. Without tape two wheelset 20g, approx 1050g real weight.
This is the almost the lightest 26 canti wheelset you can build. You dont find lighter rims, you dont find these rims anymore, you dont find lighter front hub, rear hub extralite is 10g lighter. Titan spokes can be a tiny lighter, but those Sapim superspokes is claimed 3g and is In titan spokes area.
But it is normal that Tune hubs weight 5-10g more then claimed from factory. All my tune use to do that and i have a lot of them. A wheelset is 2 rims, 2 hubs, 64 spokes, 64 niples! So 40-50g up is not much. Thats actually little complain to cheaper and factory wheelsets.
With a heavy cassette, axles, tape and wheelset is was 1280g real weight. REAL weight with a cheap and heavy 8 speed cassette