Any info on pricing?
Can't see it being appealing to someone who already has a rimfire can, but for someone who is can-less like me, this definitely has some appeal as a can that mostly sits on a AR-22, and gets occasional use on a 5.56 AR, a bolt-action rimfire rifle and rimfire pistol. For me, the greater weight relative to a rimfire can would only matter on the rimfire pistol. The bolt-action is on a bipod (too heavy to shoot accurately freehand anyway), and the AR-22 uses a 4.5" barrel, so it's plenty light already and the extra weight of the can isn't sitting out very far away.
If it wasn't for the stamp, this would be a no-brainer for me. Start with this, then if I want dedicated cans, sell it to help fund two dedicated cans. But since the purchase is more or less permanent, starting off with dedicated cans may be the right long-term move.