The thing is it may be in our pocket now, but think of that money attached to a piece of string and covered in glue to take more money out of your pocket in the future. It's a loan pure and simple.
I can quite understand why retailers such as yourself would defend the drop though, you don't have a shop floor as such to worry about and it makes for some great publicity with very little outlay. You only had to look at the replies in the "VAT drop coming early" thread to see how easily people are suckered in for such a small reduction. On a normal day a 73p drop in RAM previously costing £29.99 people wouldn't even have batted an eyelid.
Yes the government is paying for the tax cut with borrowing. But if this boost to the economy has the desired effect it will reduce the amount we have to pay out in unemployment benefits and lose from reduced income tax revenue, which could more than make up for it. As Over Clocker said, you need to look at the big picture.