It strikes me as very gauche, particularly when it's only a letter and a sound away from a very striking, legitimate girl's name.
Isidore is a fine name for a gentleman, but take a page from the great dancer
Isadora Duncan, and use it instead. :)
Here's a picture of Ms.
Duncan of which I'm particularly fond:
http://www.danzaballet.com/userimages/image001okjuyh.jpg
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