(With apologies in advance for bringing up *anchors*)
I have been looking for an anchor to carry as a backup in case I lose my primary, and/or if I need to set two anchors in a place where my Fortress kedge is not adequate - say a deep fjord or kelpy bottom. I just came across a review of these anchors by a reputable source. With a design similar to Rocna, they should hold well. I especially like that they come apart in three pieces which would make storage very easy. Also, the price is reasonable, especially compared to say a Spade which also comes apart.
The link is to a review of the Mantus. No connection to the manufacturer, just a prospective customer.