I doubt many Swedes would believe it, or find it okay, actually.
Remember, the Union was more-or-less a personal union in a time of increasingly Constitutional monarchies (heh, Norway was very much one, actually, being Parliamentary and all) by 1905, with a few special laws regarding cross-border trade and such, and a slightly more limited foreign policy-making ability for the Norwegians.
It was not like an integrated part of Sweden, like Scania, had broken free, after all.
I don't think it makes enough sense as a Revanche thing, really...