'Joe Hoak' has hard leaf-tip spines and some leaf margin spines, not to mention a slightly different leaf shape....
Amarguy's plant looks like an attenuata to me, though it has very similar coloring to 'Joe Hoak'...
Also, I think 'Joe Hoak' is a sport from Agave desmetiana and not a "cross"...
Just my two cents.
Peyton
Well I see I was too slow typing my message...
:-)
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