Java Card

Hello everybody,

I am currently working on a project involving SIM cards. For this I am using the gemalto developer suite and the USim Card R6 simulator which is supposed to be a generic profile for the GemXplore cards. The simulator is Global Platform 2.1.1 and Java Card 2.2.1 compliant.
For some reason I am interested in knowing more about security domains, I have already asked Gemalto some questions but they never replied.

Does somebody know if we can have multiple security domains on those cards and/or simulator ?
If it is the case, what kind of privilege are supported ? DAP ? Mandated DAP ? Delegated Management ?
How can I install a security domain ? I heard that some cards (JCOP I think) have a pre-loaded package ready to be installed but I don't see anything like this. I also tried to load and install a simple security domain with the "default selection" privilege but it didn't work out.

Finally I'd like to have some precisions about SDs with delegated management privileges. It seems to me that I'll never be able to program one of those and I'll tell you why. A SD with delegated management privileges is independant from the Issuer security domain when it comes to the loading or installation of an application, right? So it must have some kind of direct interaction with the OPEN and as far as I know, only card vendors can provide this service, still right? So I was thinking that only companies can be provided with this nice feature when they order cards and unfortunately I am not a company. Am I wrong somewhere ?

Thank you for your answers.