Very nice looking! He may well be a different genetic mutation from other calicos. It wouldn't surprise me if there was a "pied" and a "calico" morph that were completely different genetically. Tokays are seemingly an endless supply of various natural "morphs". Only time and breeding will tell how they all play out. Do you have a particular female that you plan on putting him with?
The only plans I have at the moment is to prove the gene out and see if they come out like that, or whether its a progression with time.
Unfortunately most of my morphs are male so proving them out is the first thing, and then work on doing the double with whatever I have!
either way I'm really happy with it. stunning with a full tail, and its a big lad too!