I have the removable guards on my P3. Got them off Amazon. I like them for two reasons. First, I transport my P3 in a DJI hard case backpack so I have to take the guards off each time. These are fast and easy. Second, the guards I got, two are red and two are black. I put the reds on the front and the blacks on the back. It really helps with orientation.
I will note that I did have to slightly modify the hard case to accept the part of the guards that remains attached to the arms. Just a little work with a knife removing some of the foam at the ends of the arms.