I carried a 4-inch barrelled Smith 629 for a while when my Kimber Classic Custom was being hard chromed. I didn't feel like paying $60-80 for a holster I was gonna use for a month, so I bought an Uncle Mike's nylon IWB holster and wore it strongside behind my hipbone. Gun concealed just fine under an untucked polo shirt in Florida summer.
BTW, I am 5'10" and about 220 lbs, most of it muscle, so I do have the benefit of the hourglass shape to let my shirt hang right. If you are shaped more like a pear, consider a shoulder holster and a windbreaker or vest.
[This message has been edited by RikWriter (edited October 09, 1999).]