Listen, fucknugget,
"seen" is american english. "Saw" is queen's english. Like "Purchase" and "Bought". Bought is appropriate in the Queens English. The funny thing about queens English, as well as all of England, is that whatever the queen says becomes appropriate Queens English. If the Queen says "Ain't" then it's a word in the Queens English. If the Queen speaks Oxford English, then the two are similar. (Not "Same" because that's Queen's English). I'm not sure if this is always true, but english spoken outside of Oxford guidelines is Hackneyed. northern English is completely cryptic.
American English for the win. We utilise (See that "S"? That's Oxford English) "Purchased" instead of "Bought" and substitute some form of "Done got gripped" for the Oxford word "Purchase". If I fall off the cliff (or Dale) and grab (Or reach out for) a Branch (Or limb), then fall I have lost Purchase on said Limb. Also I have fallen from Heath onto Ye Olde Vale.