I have carried the sp101 spurless hammer model for several years now. This is what I've learned:
You may not get a paddle holster that will conceal well. Why? That sp101 is short & fat , when you add the extra thickness that a paddle holster has to have it ends up being like carrying a round ball on your hip.
I'm assuming you want a paddle for the ease of on/off, correct? You may want to give that up in favor of the "spreading" affect of a good pancake holster. Give this some serious thought.
If you do decide ultimately on a paddle rig, you'll have to get a good one(read expensive) for two reasons:
1. Better design-easier to conceal than a cheap one.
2. That gun is small, heavy, and thick. To control such a gun in comfort & concealment for extended periods takes a lot of smarts on the holstermakers part. Those that do it well know they do it well, and charge accordingly.
Also, by your comments I take it you are built fairly stocky? If this is the case I reccomend a leather rig, not kydex. Why? The leather rig will somewhat conform to your body after a short time. Your body will conform to the rigid kydex rig. This leads to a lot of pinching and poking.