and go to any ATM machine here in Doha to take local currency you will be charged.

If you take your Doha debit card to the US and take US$ there then you will be charged.

There is people saying they don't mind transferring the whole salary into their overseas account and pay the fees/commission every time they use a Doha based ATM machine since it is considered; and I quote "peanuts

Better talk to the bank and clarify the fees scheme they would applying onto your account on every overseas transaction you perform.

Regards!!