Not to be difficult or anything but it takes 5 minutes at most to pull the throttle body. Cheap insurance is replacing a crankshaft seal on a pretty new shortblock, or changing the oil frequently. Something where you can hear the noise of air whistling if it doesn't seal and takes only 5 minutest to pull off??

You can save the $3 and the drive to the store unless it leaks, if it does you are only out $3 and 30 extra minutes.
You are definitely correct from one perspective, but from mine I have to ask is it necessary.
I am still using the stock TB gasket and I have pulled it on and off no less than 5 times. I am still using the same upper intake manifold gaskets and I pulled the upper IM off no less than 15 times for periodic cleanings, testing different fuel pressure regulator mods, changing injectors (3x just for that) and a few other little things.
warmonger