OK, I'm gonna jump in. I've got one, and it is perhaps one of the highest quality .22's available, the steel is incredibly hard, and fit and finish are perfect. It also employs a locking lug on the bolt, which in my opinion is many times stronger than the way the marlin 39 uses only the lever to hold the bolt closed. I haven't benched it yet, but mine seems very accurate.
Now for the downside, they can be a little difficult to disassemble, but not beyond the scope of the owner. If I recall, the side screw is removed, this allows the upper and lower receivers to separate by pulling them in opposite directions. The caveat here is the ejector, it balances delicately in a small recess cut in the upper receiver, and depends on a slot in the bolt to hold it in place. There is a small delicate spiral pancake spring under it which is very easy to damage upon re-assembly. But with a little care and foreknowledge, it's not too hard to strip it down for cleaning the internals, you don't have to take it apart very often, because it shoots so clean, you can go thousands and thousands of rounds between take-downs.
I'll post some pictures on disassembling it tomorrow when there is more light to take pictures with.