As long as they have a place to get out of the light they are fine.
The G. rosea will sometimes bask in it, the H. sp.Vietnam never comes out except at night(so it's not a problem), our A. metallica didn't seem to mind at all and the P. cambridgei has lots of leaves to hide under and does.
Your P. Cambridgei looks amazing btw. I hope mine does fine and grows up. Im trying to keep it moist in there for him. Hes doing a good job making his dirt wall in between the plant and the wall.