Apologies for being AWOL; life has been rather busy for me as of late!
I was able to get some tobacco smoking in, however. I still haven't had a chance to compare the the regular SPC Plum Pudding vs. its barrel aged variant. But I was able to compare Mississippi River and its barrel aged version. Thanks again to Fireground for kindly donating some to me!
Now, just to be clear: my palette is not as keen on nuance to the degree of some of our more seasoned smokers. I'm also fairly sensitive to latakia, so initially, that really overwhelmed me since both blends have some. But I acclimated and was able to definitely detect a difference between both. For me at least, the barrel aged variant was sweeter on the front-end and left a slightly woody aftertaste distinct from the latakia or orientals. That difference in aftertaste is slight, but it is noticeable.
So, there is a noticable difference! To me at least, and Lord knows I am not well-suited to this task, especially given my sensitivity for latakia. But even with that, I noticed a difference, and I imagine someone not as sensitive as me would likely discern more of a difference. The best way I can describe it is, well, you know how if you ghost a pipe really good and it leaves a taste on a completely different tobacco, but in a good way? That's what these barrel aged tobaccos feel like to me. It feels like the tobacco has been "ghosted" with spirits and oak. It can be an enjoyable difference.
I think the people who would get the most out of these kinds of blends are those who already enjoy the base blend, but want a twist to keep it feeling fresh. And people who like boozy and woodsy flavors in their tobaccos (which I do). Now, is that difference in taste enough to justify a significant markup in price? Not really, but a modest markup? I'd bite at that. I'll see how the barrel Plum Pudding tastes once work/life eases up a little.