I'm using A530's on my road bike, having changed from the as sold toe clip pedals. The idea was that I might need the flat sided option if I nip off to the shops on the bike. As it happens, I haven't ridden without the cleated shoes yet. The shoes I wear are cheap and cheerful jobs from Aldi.
As far as getting the pedals orientated for re-attachment after a temporary halt, It seemed a bit awkward at first, but now I'm used to it I find a quick look down to the left pedal, a gentle flick if needed, and click, I'm re-attached. Usually, the pedal comes back round already the right way up, so it may well be made slightly biased by the manufacturer. These are definitely a good option with only one bike in the house.