I have three fountain pens that I use for work, and one of them is definitely my favourite (weight, nib smoothness and inkflow are all perfect!).
I’m also not sure who it was upthread who said signing documents in front of others people isn’t stressful - I beg to differ. Many years of taking, and being a witness for, people signing affidavits and other legal documents shows very clearly that many people find it very stressful. People are surprisingly prone to getting their signatures all wrong or spelling their names wrong because it’s something they normally do on autopilot and then when they falter through stress they have no idea how to get back on the right track!
Also - with the ink pens at the accession proclamation, that was badly done by the staff there to support Charles. The inkstand was unnecessary, but had clearly been placed there as a sentimental gesture as it had been a gift from his sons. Fair enough. But when it became clear when signing the first documents that he found it in the way and ended up gesturing for it to be moved, why on earth when they laid out the second set of documents to be signed, did they put it right back in the same place? That’s just not paying attention. (I’ve been in that role, where it was my job to thank of everything my boss needs when on show and make it happen seamlessly, so I know damn well what I’d have done there. Unsurprisingly, he was irritated).