Finally got it all setup tonight. The QHY5L has less back focus than the ST-i so that was entertaining in getting it connected - I've got a bit of a ghetto solution going at this time as I don't have the right connectors.
Doing darks requires a bit more work than with the ST-i, but I'll adapt.
I've also just started using PHD2 (instead of PHD) - very nice - I do like the detail of the graph and the little PA error circle as well. Unfortunately the wind here is a bit too breezey, so I can't get any real testing done, but I think I'm right to go roaming now.