mdadm --dangerous-no-resync equivalent

Hi,

I have an installer (http://sourceforge.net/projects/terraformix/) that
creates Raid 1 arrays, previously the arrays were created with mkraid
using the --dangerous-no-resync option. I am now required to build the
arrays with mdadm and have the following questions ;

1) Is there an equivalent of --dangerous-no-resync in mdadm ?

2) Can I just go ahead and install onto a newly created RAID 1 array
without waiting for it to resync ?

3) Can I just go ahead and install onto a newly created RAID 5 array
without waiting for it to resync ?

Thanks in advance.

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