(moved to encryption group)
The simple answer is, dual boot is possible IF your IT department set it up for you. You won't be able to do it yourself. Each OS needs to be on it's own primary partition. MDE has a built in boot manager which will let you authenticate, then pick which primary partition to boot from.
You will not be able to use any Linux boot managers etc.
No, you won't be able to access the Windows partition from Linux, as it will be encrypted.