For me we should play him whenever we think he's ready - opposition doesn't bother me. It was a very long time ago he was at Saints now. I don't think he'd be fussed by it, he's a professional. No crowd either (which could have made it more tasty).
The benefits of getting a fit, skilful and dedicated 6 back in the side outweigh some of the negatives for me. Very interested to see how he goes.
With the side selection, I'd say it's likely we'll run with same again. We won the game against Wakey and actually looked alright for the most part. I'd still be tempted to switch A Sutcliffe and Broadbent around in the centres. Mellor is a good defender on the LHS and Broadbent is more used to playing there - for me, probably his long-term position too with Newman at 3.