LOL yep my standard piece of shower cleaning equipment is an old green scourer. I have learnt not to use it on clear perspex though as it scratches it... but on tiles it works a treat... especially with some Gumption creme cleanser.
I use the current scourer in the kitchen to replace any worn out ones in any of the bathrooms and then get a new scourer for the kitchen. I never use a new scourer for the bathroom.