Of course there will be some, but I don't think the numbers will be remotely close.
You'll find far more Weegies at EDI than the reverse. Also, I highly doubt you'll find anyone at GLA who is travelling between Edinburgh and London. You'll find Weegies traveling to London at EDI.
The message from those in the West of Scotland to the world's airlines is clear: You need not come to Glasgow, we'll come to you at EDI. This is perhaps a more fitting strap line than the current Proud to serve Scotland.