I think most of the others have pretty well covered the duty weapon thng.
I would like to say Congrats on a career decision and good luck with it,
Also, I hope that it will not fall your lot during your career to carryout the disarming of this country further down the road. If this country continues on this path, there is little doubt in my mind that we well face that reality in the not so distant future, I am confident enough in that prospect, that if I were young...it would keep me from a career in LE. But, I certainly hope that you are never faced with this reality. BTW, by disarming I mean, not so much confiscation, as enforcing the ever tightening restrictions and outright bans on firearms, Because, if the laws are passed, you will be bound to the enforcement.
God bless you and good luck to you.