I finally broke down and got on one of these at a gun show a couple of days ago. It's a very nicely detailed replica, even though the non-working features and the "Schmeisser" logo are a bit annoying. I don't know if these will ever be collectible, but I couldn't resist the urge to take it out in the field and test fire it. I had the same problem as everybody else seems to have, the rifle shoots nice and straight but about 4"-5" low at 50 yards. The fix Sheepherder linked to looks like the slickest way to correct this, and it should be very easy to make a spacer. I might even make a few extra ones for those who like to shoot theirs.
The trigger pull is a bit heavy but also very crisp, the sights are excellent and the recoil is pretty much non-existent due to the weight of the gun, so it was easy to stay on target during rapid fire excercises. I had a couple of misfeeds, but overall it performed very well. I got it mostly for the looks, but I suspect that this one will be used a lot.