rb411u with dual GSM ISP providers

Hello,

I have 2 sim cards with static public IP’s from different ISP and want to use it for redundant connection for remote officies.

Can I use rb411u with first SIM card in on-board SIM-slot and second SIM card in 3G modem attached to USB slot at the same time?

I have no rb411u yet that’s why I can’t test it by myself.

If rb411u doesn’t support that, maybe there are another mikrotik appliance that support this feature?

Thank you.