Took me a little while to get used to it. I use it regularly on first cleans but I have gone back to the fixed carbon goose neck for maintenance work. I use it on the odd difficult to reach window and conservatory/velux roofs. Excellent addition to the arsenal. I felt the bolt needed tightening a tiny bit, I didn't quite like the standard swivel action. Now it's fine.
Need to try it with 90 degree socket though, as I'm still using the angled socket, seems a bit funny this way.