WHATS THE CONSENSUS?

Haven't really heard of them to be honest. A quick search brings up revant and fuse lenses, and their website from 2019 still says coming soon. If I had to guess, they'd probably be on par with other third party. I always stick to original, but I suppose for discontinued models, it could be an option.

Ikon seems to have an exceptional reputation with collectors, even moreso than Fuse or Revant (though I have no metrics to prove this last point).