OK, Those who have been though it help me out.

I have been crossed in and out of Canada (B.C.) a couple times, both times by motorcycle. the first time, which was back in the early 80's on a ride to Alaska, I was basically waved through both ways. The officer on the US asked how long I'd been up there, how was the 'Oil Can' highway, and said welcome back.
The second time was a several years ago, post 9-11, and I had only been up there for a couple hours, having passed through Glacier Nat. Park. The return crossing was very busy, but we and a few other bikers were actually waved over to a faster moving lane, met a sniffer dog, and again basically waived through. I thought that was funny at the time, because I'd been warned that they were "really bad" and to leave my "personal protection items" at the hotel. (which I would have anyway, knowing where we were going) Maybe I just hit a good day?

So my real questions are, how much search do they put you though now? And are they really looking for seal sporrans? Are they really going to quiz you about one? Q- "what's this made out of ?" A- "Leather, I guess".
I'm really wondering about this, I just think of all the wacky crap I'm sure folks try to bring into the country, I just wouldn't think sporrans, sealskin or otherwise, are high on the checklist of stuff they have to worry about.