Tricky to call, because in fact this is a storm in a teacup. Long term, this is a complete non event. The tax cuts are small, the market already knew about the energy price cap and it is not out of line with other countries, and the quality of forecasts mean it is impossible to say that it presents any credible risk.
I'm more worried about the quality of the Bank of England than Truss/Kwarteng. Truss cannot be as stupid as she is made out to be and casual sexism aside must be moderately able. Kwarteng is absolutely outstandingly intelligent and able. Doesn't guarantee he's correct, but any argument relying on the idea that he is clueless, out of his depth or reckless must be categorically wrong.
There are elements talking up a massive feeding frenzy for reasons of either political enmity/ media entertainment/sheer stupidity or standing to gain from easy momentum trades during a panic. Leaving the politics out of it, the behaviour of the BBC is extraordinarily reckless. It is by no means the worst offender, but it is a national broadcaster and is taken seriously abroad. In that light, they ought to be seeking serious considered comment from serious individuals, rather than some of the dross they have been headlining. There has certainly been no serious attempt at impartiality nor at objectivity or context. This evening's feed had a relatively junior analyst from an online stockbroker answering questions like a radio 5 live phone in. Completely out of his depth and not given the chance to think before typing. Yesterday they headlined the opinion of someone from a tiny firm of no obvious quality that nobody had ever heard of. Etc.
I can't decide if it's already blowing over (the rational outcome, pending hearing the other half of the plan in November),
.....or if the feeding frenzy will become a self-fulfilling disaster. Which is not the correct outcome, but once enough lemmings jump off a cliff there's bound to be a messy pile below. It's a classic panic and there is no rationality at work, anything could happen. Nothing should happen.