PSB here declared all contractors outside after using the ESS tool. The agencies have been a different matter: many contractor's agencies were OK but some contractors had to switch or had considerable agro convincing their agency to agree to PSB outside IR35 determination.
I'm still slightly worried my agency will go back on their word and pay my next invoice net. But they know in that case that will be the last invoice they ever receive from me and possibly the last time they work with the PSB too.
Overall I'm cautiously positive. When these rules are applied to the private sector (next April IMO), it may not actually be so bad.