I just read Crews post of the grips for his SP101. I really like the gun and reading this made me get the fever again. But, it is a big, freaking gun! My choice would be the 4.2 inch barrel. Can you carry this all day and do it comfortably? IWB? Let me know. Also if I can find one, what is a reasonable price? Used? New? I carry my DW .45 Guardian IWB and it's not nearly as heavy as the Ruger, but you know it's there at the end of several hours. Enlighten me oh wheel gun gurus that I may see the light and find happiness.