If you are relly concerned about your t transaction fee you might want to use no-fee online wallet like Xapo - you will never pay anything when sending/receiving BTC.
They are baiting customers by their no fee policy. If you want to keep your Coins in Armory of any other wallet it doesn't mater if you keep them in 1 or 2 wallets.
All that matters is size of your transaction - paying 20 satoshis per byte of transferred data (0.0000002) will grant you smooth transaction experience.
What a good revelation ! I have never heard about xapo's existance but base on the explanation you gave I think I should give a trial using this platform,though the online wallet provide I used currently is blockio which I am very happy with because of the ease with which I found it.They are baiting customers by their no fee policy. If you want to keep your Coins in Armory of any other wallet it doesn't mater if you keep them in 1 or 2 wallets.
All that matters is size of your transaction - paying 20 satoshis per byte of transferred data (0.0000002) will grant you smooth transaction experience.