I downloaded the devcoin client in the OP.

Overall, it seems okay so far (indexing the ~118K blocks will take much more time). However, there are some minor cosmetic errors:

1. The taskbar logo, the window icon and the "About Devcoin" logo are I0Coin.
2. In "Sign/Verify Message", the "Devcoin addresses" are actually I0Coin addresses.
3. "Pay To" says "Enter a Bitcoin address".

Other than that, I don't see any major problems. I'll wait further until the reindex is complete to update this post.