Having used the lube once now, here is a quick review. Will update after 2 more tries!
Packaging and first impression
Well packaged and the product includes a card explaining how to mix the powder. Also a nice foldable funnel to pour the powder into a bottle.
Mixability
If you leave enough air and shake well enough the product mixed without clumps.
Slippery
I noticed that when using the recomended amout of powder the lube is not so slippery. Maybe if I add more? Will try next time.
Smell
There is no smell to the product. This can be a good thing but I kinda miss the nice smell of conditioner I normally use.
Aftermath
If we leave the lube out of the fridge it will rot. So best to clean your wetsuit very thoroughly.
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Update 12th June: Added 3 table spoons to 1 liter. A bit more slippery now, but not yet on the hair conditioner level.