If anyone is wondering about the security of the final coords of the thousands of puzzle caches that used Evince, you might find the following quote from the Evince FAQ page somewhat reassuring:
"Why should I trust you with the answers to my puzzle cache? Can't you just look up the coordinates in the database?
No. With the exception of the horseshoes and atom bombs entries (see below), coordinates are never stored. Instead, a single hash value is calculated from the coordinates, and that hash value is stored in the database. The calculation is one-way. It's not possible to restore the original value from the hash. Also, to prevent what's called a "dictionary look-up", a secret 32 byte value is mixed with the coordinates before hashing. When someone wants to verify a coordinate, the same hash calculation is done with their entry, and if the hash values match, then the coordinates should be correct."
Of course, its not just the loss of a checker but also all that "extra" information that may have been given by the COs such as waypoints, parking coords, trail head coords and hints that is now lost. If the CO is no longer active this information is now lost for good! Pity Groundspeak didn't negotiate some sort of arrangement with Prime Suspect to take it over.