the first photo i remember--he's in vision street wear shoes/clothes still, so mid-1980s?
I remember this one in some retrospective thing in thrasher, the caption was "every thing has been done before" and I'm pretty sure it was dated late 80's.
My friend and I always joked (mid 2000's, that is) that fs 180 nosegrind is like a "technical" hammer for guys that ain't really technical (like JT etc.).
Wieger would be one of the first on my list