Do Accumulo 1.5.1 and 1.4.4 work with ZooKeeper 3.4.5?

[Hunter Provyn]

We are contemplating upgrading to ZooKeeper 3.4.5 for a project that 
depends on Accumulo 1.5.1 and 1.4.4.

In 1.5.1 pom there is the note:
<!-- ZooKeeper 3.4.x works also, but we're not using new features yet; 
this ensures 3.3.x compatibility. -->

In the 1.4.4 pom there is the dependency on 3.3.1 with no note.

Are there are any known issues with using ZooKeeper 3.4.x with 1.4.4?
Is it known to work or not work given that no new ZK features are being 
used?

Thanks!