Found some good replacements for the OEM vert boot snap hold down clips...
Went to hobby lobby's clothing/fabric section, and found these... (listed at 2.99, but were 50% off all western wear products LOL)
the contained 4 clips as pictured below, 4 top snaps, 4 gaskets, 4 caps, and 4 snap backings... you will only use the clips i pictured.
Looks pretty good to me.. better than the one faded rusted zinc brass whatever snap that was on there.
and yes, the 5/8" snap fits the OEM boot NICE and tight.. as tight, if not tighter, than the OE snap stud.
for $1.50 replacements