I did manage to purchase a spartan in 22mag/410 in the US last year. IT is still hung up in customs though, a full year later. So, yes, Spartan did bring out the rimfire combos; I even saw a bunch of the 22lr ones on line last February. Whether they are bringing in more or not, who knows.
Yes, all of the Baikal combos are in Canada, but I wouldn't recommend purchasing one from the US. The first reason is as listed above. I have three combos (EAA 6.5X12, EAA 22WMRX20, and Spartan 22WMRX410) that have been in customs for over a year. I got tired of waiting for an importer to bring them into Canada, so I purchased them in the states. Funny thing is, once the deal was done, about a month later they showed up here with a new importer. Prices though are about twice what they are in the US.
Yellowknifedave