don't think I can get you to one key but theres stuff you can do a little diff

for that item your doing I would cut in half and use a the mirror mod

or you can change the pivot point from median to individual origins  (or others )

that will change to way some tools perform  

Heddheld, that's cool enough for a symmetrical object, like the one in that example (although slightly more work), but I'm worried about objects that I don't want symmetrical, or aren't symmetrical all over, and only perhaps in that one particular location I'm working on.  Then cutting and mirror won't help.  What's the trick of changing the individual origins?  I thought that was already what I did by using the "Extrude Individual" tool.  Is there a similar tool for scaling "individual"?

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.