If the Avios ever actually turn up.
Remember, you get a free checked bag with Avios issued tickets on Flybe even though it says you don't.
Every time I did MAN-ABZ last year it was a Dash 8 which was ok. I know Flybe has got better in recent years, but I just don't like the airline. Never have done, never will. Although the irregularities have got a lot less.
I don't think Loganair codeshare on the ABZ route, but they do on INV and they offer free catering.