My lefty 22lr is a Savage btvlss (I think that's the model). Stainless, heavy barrel, Boyd's thumbhole stock. I wanted a Tikka but the lefty 22lr is taking forever to hit the market, plus it lacks the wood you want.
Cz are good, but hard to come by at they never made a lefty 455 or 457 (word on the street is they're going to make a lefty 457 some day, but who knows...)
Only issue I see with the SA-22 is the price - you're looking at like $600 for a well used one from what I've seen, and it isn't going to shoot as well as a Savage bolt gun. Cool action, totally want one, but the cost has kept one out of my locker.
For plinking, a Winchester Wildcat might be worth looking at. They have a crossbolt safety which I'd normally advise against but it's reversible. That's the next 22lr on my to-buy list.