I use them all the time on my m/c, always have - and if cars are in there (which is often the norm), go in front of the car
On two wheels its all about getting yourself 'seen', bikes or m/c's.
But I've never had a cyclist complain.
And if we are complaining, why is it that I can ride in Bus Lanes in Greenford, but not Ealing - and they are next to each other.
Ealing council state there were significantly more motorcylist casualties, mainly caused by cars turning across bus lanes into side junctions...