Hi there Paul. I just found this post, late to the party.
A grea big
and so glad you found your way here.
Your semps look wonderfully healthy so you must be doing right by them. Your crushed gravel looks very nice and seems to do well for you.
One that my daughter had good luck with in Las Cruses, New Mexico was Sempervivum calcareum 'Limelight'.
Hen-and-Chickens (Sempervivum calcareum 'Limelight')
Here are some more ciliosum listed in our database.
http://garden.org/plants/searc...
Tarev you semps are looking great. You sure have figured out how to take care of them in your part of the world.