IPSC's a game of fractions. Often you'll see only a 1-3% difference btwn groups of 5-10 or more fairly evenly matched shooters in a match. As such any half serious IPSC competitor is going to try and shave off as many fractions of a second and squeeze as many Alphas out of the match as they can. And all those little bits, wherever you can find them, do add up at the End!
There's a reason why the Shadow 2 comes with a SS guide rod, aluminum grips and overall is a fair bit heavier, especially muzzle heavy, compared to the factory Shadow. This added weight, along with several other small improvements, makes for less felt recoil and muzzle flip. Which allows you to get back on target quicker and makes for faster splits and improved accuracy yada yada.
With respect to bending or breaking guide question, am yet to see either occur at a match or practice range. Am sure it can happen, but it's not something I would be concerned with. And if you're gonna apply enough force to bend a SS guide rod, I can assure you a polymer guide rod would likely snap with the same force. And anyone that swaps out a polymer for SS guide rods gonna throw the polymer one in his match spare parts kit anyway. But again you'll likely never need it. And the 'it's mostly bling' comment makes me laugh and suspect yer man there is not an IPSC competitor.
In addition to SS guide rod and or buffers, IPSC competitors will also often install lower weight hammer and recoil springs for slightly lighter trigger pull and less muzzle flip on their Shadows and or S2's. You'll also see the majority reloading for best accuracy and PF loads for their guns and Production shooters using 124 or 147 gr bullets. They may also use a race holster. Etc etc etc. For me the difference in draw btwn a ghost one race holster and ghost stinger is a .10 - .15 seconds. Again we're talking fractions. Have both holsters. Both great, but admittedly have thrown the race holster in the range bag as a back up and am currently using the stinger, even though it's slightly slower for me, but I get more Match peace of mind with it, but that's me.
All of the above individually make for fairly small improvements, but they do add up.
And yes, your biggest match improvements will absolutely...100% gtd....come from quality live and a lot of dry fire practice!! No doubt!! But even then, it's all those little things that you do that much faster and more efficiently that will add up at the end.
Just sayin
