Update, October 7, 2010
Since the post, above, I have continued to try this holster at different times, with different clothing. I've found that, for me and my body type, it is only really concealable with the SR9c under a jacket or cold weather vest. Wearing it with a sweater or sweat shirt, or a heavier shirt, still allows the butt of the pistol to push into the clothing such that it's obvious there is something there.
While this style of OWB cross draw holster may be very good for smaller framed guns or revolvers, and if the wearer is heftier and with a bigger body type, for slim people carrying somewhat larger guns, it is not a good choice. This is not aimed solely at Bullard cross draw holsters, but at all styles that do not have a method for the belt pulling the butt of the gun in against the body. If this isn't the case, the butt will protrude, more or less, but enough to show there is something under your garment.
So, my advice is not to avoid these designs, but arrange to try one out so that you can see if it fits your body style and clothing choices. If so, there is much to recommend them, as well as the cross draw carry itself.