Omobi,
Generically when ever we out any form of SIM/USIM/eUICC onto a unit we provide commands that allow safe switching between them as the unit/radio can only be used with a single SIM any any given time.
With regards what we intend to put onto the unit you will need to discuss with your sales guys but again generically speaking all of our eUICC’s are the same hardware and so can be configured as required by the customer.
Regards
Matt