It's possible if you had a really high psi in a clincher, then it might "blow" when/if you flatted. I dunno if that's high enough for it to blow off or not, I've never ran clinchers over 90psi.
SuSo's are still out there, the 20mm one got wider last year which sucked for those of us with narrow front wheels (HED3) - fwiw of the "super low crr" clinchers the SuSo's were the most resilient in my experience. Black Chili compound hype.
* personally I wouldn't hesitate to race on clinchers. Especially on an outdoor track that isn't super smooth (looking at you turn4 DLV
)