Is that gavinandresen/bitcoin-git or bitcoin/bitcoin? If I also pull the anon-ish 'coin control' is that likely to interfere with 0.6 testing? How and where would you prefer test feedback?
bitcoin/bitcoin is the 0.6 tree
I haven't done a code review of the anon-ish coin control, so I don't know if it will mess up 0.6 testing; it might interfere with the multisignature transaction changes.
The github issues tracker is the best to report any bugs you find, for general "it sucks" or "I love it" or "can you make this new RPC command to this" the best place is either IRC chat or right here.