I have it in mind to try one of these with an Elite 6500, which would put the 30x at around 45x equivalent. I presume they're similar to the boosters fitted to Leupys by Premier Reticles, but externally fited. at $180 to import one (plus presumably the tax @20% if it gets caught) I'm not going to splash out one one just to try it. Has anyone any experience of these? Are they any good, or a waste of space? .