If you turned other true stone, you should be ok. If I recall, watch your heat with this one... It does that "turn white" if you over heat it. I don't remember it being all that chippy...
But the best thing is keep your tools really sharp (or use a carbide woodchuck,e etc type tool if you have one.)
WOW! I think that looks great! Very nice for a first tru-stone attempt. I am waiting for my woodchuck pen pro to be delivered, then after I have it in hand, I am finally getting me a tru-stone to turn. Your pen looks really nice and I think the blank looks nice as well.