I saw a .22lr/410 at Shooter's Choice in Waterloo last week. I've got to agree with Stevo94 on this. It felt chintzy, the ejector is just a piece of cheap plastic that is manually operated, the barrels are held together with a cheap little polymer band near the muzzle, etc. I was interested in them initially, but was disappointed. To each their own, but I'll gladly stick with my trusty, built-like-a-tank in 1968 Savage 24.
I've got an old 24 in 22mag over 20ga if anyone's looking.