I do not have the 235, but have the orogonal strongfleece i beloeve it is 280 wt.
It is crazy warm. Like too warm to wear. It does not breath well but it is designed more as a midlayer with some pretty good wind resistance. The sitka hvywt is nothing similar. Grid fleece where wind goes right thru, a more true base layer.
The strongfleece i have is very comfortable, but i fond myself rarely wearing it. I typically want a layering system with base and jacket where i have flexibility to vent as needed.
The 235 wt strongfleece i assume is quite a but less heavy than the one i have tho, so ymmv.