Interesting.... I would think if the client with ID=3 creates the site it woudl be in /var/clients/client3/web7/ and if the admin creates the site it would be in /var/clients/client0/web8/ Is this not the case? could you double check?
Does this effect the users? If the client creates the first site, and the admin creates the second one, does this change anything about how the client interacts with the site?
I will look into this...