I think it is a bit confusing, better to use
'runway in use' = what everyone else is using, please use that one
'runway available' = if you as the captain think that's safer, then feel free, it's not obstructed or unserviceable
I did once as a newish PPL pluck up the courage to ask Oxford for a different runway (29 I think it was in preference to 01) due to crosswind and they couldn't have been more helpful, despite it being a bit of a pain to coordinate.
Tim