When I was at Ryanair a circling approach was required as part of every LPC/OPC. In some bases, especially in Italy, circling approaches were a regular event and we were very swept up at flying them.
They were generally flown in VMC and ceilings well above circling minima, Though Pisa is the one I recall being most often flown at night and in crappy weather. By contrast my current employer has a minima of 1000’ aal for all circling approaches that overrides whatever is on the plate if lower. Different route networks, different policy development processes and choices.