Honestly I think Ian is really advocating for swords, axes, seaxs, & spears for home defense. 
No blow through, no over penetration, & no running out of ammo!
Over-penetration in that case would mean cutting clean through your assailant, and lodging the blade into the wall or floor at the end of the cut.
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Their engineers put so much time into quality & listening to their customers. Most egrnomical gun design I have ever held in my hand. Love the light weight polymer frame of the SIG Pro-series for personal weapons & love the black steel full-size of the 229's w/ all the trimming. My 229R has Tri-jicon night-sights, Picanntany rail, w/ an internal laser bore that can switch between red & green targeting. Very dependable firearms for handguns.
Yeah, I knew yours had the rail because of the "R" in the model number.
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If I want to put a laser on mine, I'd have to go with one of the alternatives, such as laser-grips, or a laser built into the spring guide (my dad got one of the latter, and it seems to work well enough). I don't think the "R" variants existed yet when I bought my .40 229.
Personally, I really didn't like the Sig Pro line at all. It just didn't feel right to me. The new Sig modular pistol (P250 I think?) is the first polymer handgun of theirs that felt better to me. Previously, I felt that if I were to get a plastic gun, it would probably be a H&K. Glocks don't feel good to me either. This is all from a subjective "fits my hand, feels like a weapon and not a toy" sort of standpoint for me.
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I really like my steel frames. Just a personal preference, of course.