Used the Barracuda Mont Blanc’s before now and easy enough to fit & remove on the roof bars T rail type fittings and they keep the bike nice and secure. Even running a Chunky Monkey it only requires a few psi letting out for a snug fit.
I now chuck the bike in the boot but if I was to go roof bars and carrier again I’d defo opt for the Thule Outrider 561, a friend has one and it’s just great. Dead easy to get the bike onto, secure, lockable, smart looking (for a bike carrier) and easy to fit & remove. The only downside is if you need the ‘other’ adapter for your fork choice.