6sn7 to 6922 adapter: good idea or bad idea?

I was messing around on tubedepots website, and when I put in 6sn7 as a serach enginge, these adapters came up to put into a 6922 socket so the 6SN7 could be used.

I would be using a pair of them in front of a Cary v12 (Cary calls them the "driver + input" tubes). There is plent of room on the amp  where those tubes would be going.  I have several pairs of tested good vintage 6SN7s I could roll in those sockets, and that's why the adapters caught my interest.