Foggles are not the same - you need to fly in cloud to counter the fear factor. One of my most valuable lessons as a PPL occurred when a x country navex was cancelled because a front came in early. My instructor agreed to do a couple of real low level circuits since the cloud base was now 500' AGL. I ended up climbing into cloud by mistake on the first downwind leg. Whilst able to keep the plane level & descend, it was an alarming experience. The second circuit was much better. I'm glad my first and only experience of this was with a trusted instructor in the RH seat. I will definitely be much more relaxed if it happens for real.