I've CONSIDERED them, but in reality I have only SEEN one in actual use. I think they're priced a tad too high.
I'm thinking that those spending that much cash on a scope are buying similar priced Kahles, Swarovski A-Line, or Docter instead. Or perhaps they're kicking in a little extra and getting a Swarovski Pro Hunter, Zeiss VMV, or a Schmidt and Bender.
I'm just not seeing that many of them. ALSO, consider that there are only two models. Not much of a choice.
The LPS IS a 30mm tube.