It's rather odd. A lot of places stopped stocking sly yet under the name of valken everyone has started stocking the products again. I'm not sure whether its a case of new management etc or just trying harder as a company in general.
Unfortunately my slys never made it to the field so I can't comment on the profit lenses. Between me finishing the law degree and preparing to move ive never had a chance to use them. I also bought some I4's so both set of slys are the mrs' .
My worry with the i4's is water getting in between the panes. I've been told that's not an issue with slys though. Swings and roundabouts it seems. Can't win everything