I suggest you call he gas company and find out what the gas pressure is going into your house. Most of the time the pressure is low enough that all you need is an on/off valve for your gas line at or near your bench.
I prefer the adjustable pressure of propane for the ability to create a more penetrating and hotter flame when I need it.
Also you may want to read this;
http://lampworketc.com/forums/showthread.php?t=294138