Weight is really more of a personal preference, what is heavy to some may not be heavy to others. A few years ago my weight limit was 30oz and that limited me to a very few select scopes, I've since moved my threshold to 35oz which has opened the door to many more scopes. My main long range rig which once had a Vortex AMG on it now has a Minox ZP5 5-25, this is a rig I use for long range and for hunting and I think the ZP5 is a formidable big game scope as I can easily frame a bull elk at 50yards within the FOV at 5x, same with the AMG at 6x. I have not really noticed the increased 5oz or so between the AMG and ZP5 and I suppose one could argue "then you wouldn't notice the additional 6 oz of the TT" and you might be right, but I try to position a scope between optical/mechanical quality and weight for my rigs since all of my gear serves dual purpose as steel/hunting and for me personally, I find nothing wrong with the turrets of the ZP5, they are more than adequate for me to dial quickly and correctly and the MR4 is my favorite tree reticle though there are others I like. If I had a dedicated rifle to just competition or long range then I don't think I'd care either about the weight, in fact, I think my scope of choice for that would be the Revic because of the HUD even though it may not be as good optically as other top tier scopes.Maybe it's just me but weight wasn't even in my thought process as we were waiting for this release. For me, any scope in a 5-25 or 6-24 range is going on a rifle I'm primarily shooting prone and not having to carry. I'm not sure I would have even been happy if the weight of the ZCO was considerably lighter than other comparable scopes as I would suspect there would be an adverse trade off that may affect performance or durability. No free lunch.
Now, getting into Ultra Shorts I think more shooters are trying to "trim up" and I had so hoped the ZCO ZC420 would have been closer to 30oz, but 35oz is just within my threshold so it's not out of the question, but it's going to have to do a lot to beat out the K318i.