I'm actually going through putting a thumb operated throttle on my bike now. Not sure how it will work out, but find myself bending my elbow down a awful lot which doesmt help. As said its crazy how you take it for granted until you don't have it, I only thought it was minor at first but it affects you more than you realise.

As for Mitch, what a guy I saw him race at post TT in 2013, a total inspiration to everyone, not just bike racimg too.

Thanks for the reassurance though, hopefully won't affect my riding too much on the road