If it does like your tank and lives, don't expect it to stay confined to one area.
It can and does spread by fractionation, and possibly sexual reproduction(?).
Microscopic pieces will break off, drift in the current, and grow wherever they land.
I have a 125g that is filled with pink pulsing xenia that started as two rocks on the sandbed with two medium sized colonies.
Everytime I move some rock or coral I find tiny stalks growing all over, under, around it.
Now every surface, rock, coral, and powerhead in the tank has xenia growing on it.
The only saving grace is that I'll occasionally take a large xenia-covered rock to one of the LFS
and trade it in for store credit.
Consider yourself warned.
On a side note: If you ever want to clear an entire tank of xenia overnight, a little fluketab residue in the water will do the job. It will also nuke every colony of GSP and will ruin the tank for either coral until it's been drained and washed.