I have two H. hottentotta scorplings in a single enclosure. I provided them with a driftwood hide. They are feeding well and have molted to 3rd instar. I have not observed any aggression towards each other, not even during molting. I also noticed that the like to huddle together. I guess I will separate them when they molt to 4th, only because the enclosure will become too small for them.
I have 2 H. h 1 H. judaicus & 1 A. amoreux in a 10 gal tank.
I ran out of tanks so i had to use it and its been working for over 2 motnhs.
Hottentottas are a very communa spp. so i guess you don't need that much of experience to keep Hottentotas together.