I've not used the stains (they are relatively new...only a few years in the NORTH AMERICAN market...the Germans have had them for a longer time). I have used the Loba 2K Supra AT (please be aware there are TWO Supras....the 'AT' = SUPERIOR protection...while the other is 'nice' but nothing compared to the 2K Supra AT).
The 2K Supra AT is OUTSTANDING protection. It has a lovely velvety, grippy finish. I would try very hard to find a stain that was in the Loba line. And if your refinisher USES Loba stains, then s/he is TRAINED in the Loba technique. And that is SUPER RARE to find. Anyone trained by Loba at the Loba HQ in North Carolina is on my list of 'people to know'!
And BTW...custom stains are MIXED all the time. Sometimes you only need 6 options to give you 100+ combinations. We did in Kindergarten. We still do it in the flooring industry.
Q