I've never tried any kveik strain, but parsing different forums here and there, it seems to me that Lutra is generally considered the cleanest (define "clean" as you see fit). I want to believe that's true because it could come in handy every now and again. It was my intention to give Lutra a shot this summer, but it seems unlikely at this point. I would imagine, just like other yeast's performances in other brewer's brewhouses, kveik strains will require some getting used to when finding its sweetest spot.