Has anyone used LOXX 'Never Drill Again' bathroom accessories

[bonzoed]

I'm looking for a rust-proof no-screws shower caddy. I wanted the simple human one but that's not going to work. I have stumbled across the LOXX Never Drill Again accessories.

Are they easy to install?
Are they easy to remove from a rough surface?
Are they really rust proof.

Many thanks if you know the answer.

No, but bought twist n lock toilet roll holder from Robert Dyas. Falls off the wall all the time, currently sitting on the floor.

It is not the suction method - been there before.