Century Optics Bayonet vs Thread mount

FYI,

I sent the following inquiry to Century Optics:
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From your webpages it appears that you offer several
video camera adapters that are available with your
"exclusive bayonet mount" for several different
cameras including the VX2000. Since the VX2000 also
has 58mm threads and the same products are available
for a 58mm threaded mount, could you please explain
the advantages of using the bayonet mount? Is it
simply for ease of attachment and removal? Does it
reduce vignetting? Is there some other reason?
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They responded:
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Thank you for your interest in Century products. The current
58mm Century attachment will not vignette when threaded directly onto the lens.

However, the bayonet mount is easier on/off, much more
secure then threading onto the plastic threads of the lens
and has the least amount of wear and tear.
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