Yeah, that does look quite useful, and with quite a good selection of lenses, but I think I'll stick to my old one.
https://www.ebay.co.uk/itm/10X-Magni...-/322888501891 It has three lens options built in AND it allows me to leave my reading glasses in place for when the magnifier is flipped up out of the way. This one appears to rest on the nose, so normal spectacles would need to be removed, but it does look more comfortable than the headband type.