Fibbing

So this Fibonacci poetry structure is interesting (and the latest poetry pentathalon challenge). I've been intrigued by the variety of form and how poets have experimented with it. Like this simple, startling poem:

on that one day

at
work
listen
sound of war
hiding we sing psalms
after all our dogs harmonize

David E. Howerton

and this more complex one:

Leaving Shelter

No
more
talk of
honey or
coin, these States remain
remains harvested from our hands,
blood-brushed paths and busted concrete covered with things once
given with love; survival is a necessity
no longer found in microwave
meals, crushed pills, mirrors,
on TV,
no, now
it
is
found
in
instinct,
avoiding
extinction; growing
is a lifestyle to master – if
we are mindful our offspring will be cultivated
in patience, giving scars etched on streams, fields, and flesh a
death from screaming time to reflect
upon simple things
like breathing
or of
the
wind.

Alexandra Hoey.

I wonder what are other people's experiences of fibs? And what do you think about more strictly formualic approaches that define a fib poem as having to have six lines, or having to start the number sequence at 1, and whether you go by the number of words or syllables?
It seems I just can't help looking at a rule and immediately thinking about how I can break it.