selfinflicted,
The carbon steel grohmann I had never posed a problem with rust. About the stainless, don't worry! If the heat treat is fine, then your knife will perform well. Get in the habit of touching up the edges on yoru knives, isntead of doing full-blown sharpenings. A few strokes on a sharpmaker once a week will keep the edge super sharp. If you take your knife camping and you are doing a lot of woodwork, have a sharpening device to touch up your edge every once in a while. No worries mate, you're getting a fine Canadian product!
Just FYI, the knvies are made in Pictou, Nova Scotia. I saw pics of the "factory", and it is amazing because of its simplicity. The factory is also the store, and I think it is a simple 2 story building covered in logs or something! These knives get a lot of hands-on work. Enjoy your Grohmann!