Holy cow, I’m not the brightest.
Hammy is working fantastically; to my own amazement, having Chrome Inspector up was apparently the culprit (even though visually things looked fine). Although it doesn’t explain the issue with Safari (which will load the image half the time without a resize), I think the issue is definitely on my end.
Noel, it appears that just posting to your Hammy forum helps me solve my own problems; your plug-in rocks – please keep updating it!
Only recommendation I would make is to include more examples of lazyload commented out so people don’t have to dig as much if they want to include additional options.