Trading Musicman Petrucci for a Luke, Is this worth it???

Hi everybody. Just a question. I have a Musicman luke in blue color and a Musicman john petrucci jp6 in mystic dream color. I use the Luke more than the Petrucci. I love the Luke!!! And my question is this: A guy from ebay has a Musicman Luke in black color and wants to swap it for my Petrucci. I like the musician luke in black color a lot. I know this sounds a bit dumb because I´ll end having two identical Musicman Luke´s, one in blue color and the other one black and I will lose the Petrucci, . Would you swap the Petrucci for the luke?