I have a background in "Metallurgy" (science of metals), and the offset hooks (reversed, or kirbed) are designed for better hooking of the fish. You should not bend the hook shaft (not to be confused with the hook shank). bending of the hook shaft (the section of the hook from the point back towards the bend) will weaken the metal, by causing a interior fault in the metal.

If you have difficulty tying the flies on the vise with this bend in the hook shaft, you could offset the vise head to allow the hook shank to be parallel to allow easier tying.

Many fly hooks, have a offset hook shaft, just for the hooking more fish that take the fly.

~Parnelli