Interestingly, with these callsigns that spell words, I have in the past heard them use the word as the callsign rather than the phonetic alphabet. Is this acceptable?
For example, there was a German King Air reg'd D-IANA which used the callsign "Diana" rather than "Delta India Alpha Nov' Alpha"
Recently, I heard "Spiky" (SP-IKY, another King Air) descending inbound one of the London area airfields.
With the introduction of the Manx reg', there are quite a few possibilities, Motor, Mandy, Mungo, Marty, Minga etc..
FC