Yes. In ritual they can appear physically in the manifestation base, by forming it around them. I usually get eyes and faces.
I also see them without a manifestation base and they look kind of like a heat haze in the area where I feel them to be.
In the half awake state I’ve seen a couple, unasked for of course, one shadow being and one Fae. The first was probably a curious passerby and ran as soon as it realised I was looking at it consciously, and the second had an invitation.