TIL those new UV-cure sealants for insulated units actually work

I thought it was just a gimmick when the rep showed it to us at a trade show in Cleveland two years ago. We had a tricky job with a big thermal unit in a cold office building, and the old butyl just wouldn't set right in the damp. The foreman pulled out a tube of that UV stuff and a little light. It cured rock hard in under a minute, no mess. Has anyone else used it on a big commercial job yet?