Any opinions? Read a few good reviews but any real life users?

I have one superb jacket keeps the chill off but not too heavy weight. Quite small sized/snug fitting so perhaps try or go up a size if you dont want the racing snake look.

How showerproof is it?

Pretty good as it's a softshell type fabric, dont think it would hold out as long as something like gore-tex/Event etc. I got mine to use Autumn and spring type of time. When you dont need a full blown waterproof kacket but need to keep the chill off and account for any shower.

Cheers for that, sounds just what i'm after.

Really like mine, just need the temperature to drop a little bit and it will be getting a lot of use.