Here is another idea. Stick with a Vaquero, but utilize an interchangeable front sight set-up. (This runs about $184 from Alpha Precision.) You could have one front sight set up for your hunting load, and a second for your self-defense load.
I think this will offer much cleaner asthetics (not too mention cheaper) than anything we have discussed to date.
[This message has been edited by Daniel Watters (edited February 25, 1999).]