Nothing at all wrong with them. In the past there were a bunch of people who ordered them expecting Stows on the 4497 last but they're on the slimmer W2298 last.
They look like Stows, but they're not and were dubbed the Not-Stow. I didn't mean to imply there was anything fake about them.
STP seems like they've been restocking them every 6 months or so for a few years. That seems pretty regular for something dubbed a closeout.
There's some question whether they're made special for STP. Lately I've seen a few pairs of seconds on Tricker's ebay shop identical to the STP styles.