On Wed, Apr 23, 2014 at 10:54 PM, Pieter Wuille <pieter.wuille@gmail.com> wrote:

Would you consider software which scans all accounts as specified by
BIP64, but has no user interface option to distinguish them in any
way, view them independently, and has no ability to keep the coins
apart... compatible with BIP64?


No, because one of requirement of BIP64 is to do not mix addressess between accounts. Without handling those accounts fully, it won't pass this requirement.

("This level [accounts] splits the key space into independent user identities, so the wallet never mixes the coins across different accounts.")
 

Marek