I went to message my LHBS yesterday to see if they had and of Omega's Hornindal. I scrolled down on their facebook page before sending the message, and it turned out that the owner from Omega was going to be there and put on a presentation so I had to go.
About 75% of the presentation was centered around Kveik yeast. He really drilled in about Hornindal and how versatile and resilient this yeast strain is.
One major takeaway from the presentation in regards to Hornindal yeast; He said they have conducted experiments with low gravity beers and have gathered other anecdotal reports. He said this yeast strain has difficulty attenuating effectively when fermenting low gravity beers. If you are using it for a low gravity beer he recommended using yeast nutrients.
An additional takeaway in regards to cell count and why they don't post cell count on their packets; Biomass of yeast vary wildly from strain to strain. For example a a Belgian yeast cell may be significantly more massive/larger than a Kveik strain. He said biomass is a better indicator for pitch rate than cell count. To summarize, they measure their packs by biomass, not cell count.
I got to nerd out along with about 30 other homebrewers for an hour. It was amazing!