I had the R&G uppers and lowers on my last bike a Mille, last year whilst in Germany the bike stalled, I dropped it and it slid several feet down the road. The clutch lever snapped off, that was it, no damage at all to the bodywork. It was the sort of incident that could quite easily cost £200 to £300 to repair.
Fitting R&Gs was one of the first mods I made to my Superduke, they are not the cheapest and you hope you never need them, but they give some piece of mind. Also some insurers in the UK (eBike) give a discount if they are fitted.
I ordered mine direct from R&G, via the internet, you can get them in black or limited edition orange.