Came across these and wondered whether anyone had ever bought one. I am tempted and you obviously really need two which cost £29.99. If they are a good fit and stay in place they may just about reduce amount of swearing. They are not leather but so long as they are unobtrusive that would be OK.
http://www.ebay.co.uk/itm/121155730948?var=420161788042&ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649
http://www.ebay.co.uk/itm/121155730948?var=420161788042&ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649