Some people try to find a product that will do better than what is standardized and known to be effective.
In the case of LRL's, the supposed magic of them of finding items over longer distances will no doubt entice them to want such a device.
Like, why bother with a typical detector that only sees a small area at one time when one can search a large area with very little work to be done?
Big problem is does it work, if there is no positive response then the user will assume there is no item there of any worth.
Then if there is a positive response, how many big empty holes does it take before the user stops digging
?