1) How durable is it compared to other "boutique" liquid carnubas?
I wasn't aware there were other "botique" liquid carnaubas. LS is kind of in a class all on its own.
2) How durable is is compared to other "consumer grade" liquid carnubas, such as Meg's GC?
It is competitive. I would have to run them side by side to tell you for sure, but I haven't noticed that its overly fragile or weak in the durability area. It is what can be expected from a liquid wax. 8 weeks I think is what I got out of it last. I've got it on a vehicle right now that I'll need to check on. I put it on a green Civic a little more than a month ago. I'll find out how its doing and report it.
3) How much depth does it have compared to quality "consumer grade" pastes, such as Mother's Cal Gold Natural?
Its awesome. I get awesome reflections and amazing depth with LS. It is above any 'off the shelf' wax in that department.
4) How much durability, compared to same?
Like I said, its pretty much the same as what you would expect. Not weaker or stronger than average. Its a liquid wax, what more can I say?
5) How is its durability and depth compared to S100 os P21S paste?
Probably a little better. It depends on the circumstances, of course. It would rival them both on average and probably get one or two weeks more from my testing. S100/P21S is a good 6 - 8 week wax. LS is usually good for 8 weeks. Its just depends on your climate and treatment of the vehicle. Your results may vary from mine based on where you are at. I wouldn't expect any wax to last 8 weeks in Las Vegas, for example. It just depends on your own individual and unique circumstances.
Mosca