Worn out bearings tend to spin better in the stand. New bearings tend to feel a bit draggy in the stand but when you ride, force through the pedals evens things out.
If something is wrong it tends to let you know by being noisy. See above...
Okay great - that seems to match my experience. There was a noise issue before and I took it back only for the LBS to realise a spacer was missing when it was reassembled.
Worn out bearings tend to spin better in the stand. New bearings tend to feel a bit draggy in the stand but when you ride, force through the pedals evens things out.
If something is wrong it tends to let you know by being noisy. See above...