I have the John Taylor and Librands.....Librands came with the car and I had The other already.
Both are great, Librands is just cockpit/screen and John Taylor covers the whole bonnet so prevents louvre ingress.
I prefer the John Taylor due to this, especially for overnight.
Librands is sometimes used as a temporary short spell cover as it's easier to repack afterwards, and was used a lot when I couldn't use my tonneau until it was re trimmed to fit round the roll bar.
I have used an umbrella a couple of times....stuck at traffic lights when a downpour suddenly came down...it drew some smiles from passers by!