Hey all! I know the Ruger SP101 is heavier than many J-frames, but how much LARGER is it? I tried looking and there are no good comparisons that I could find after a browse. What say you? Is the SP101 harder to conceal? Can it be concealed with a T-shirt in hot weather? Reason I ask is because I *may* be the new owner of one soon. I plan to IWB carry it, not pocket carry. Thoughts?