STroppy has put the LEDs in his ST1300, and they seem to work well in it. The tabs need to be modified as usual for the STs.
I now have 13,000kms on them, so they have well outlasted the plus 90 bulbs which cost the same.
I installed my LED's the other week, but I just haven't ridden at night since, other than between garages. Great to know that Saaz has done 13000k's on them, as I was a bit concerned that they wouldn't last long, so I'll have to pull my finger out and do some KM's.
I ran the power lead from the LED down between the reflector and the rubber boot, rather than back where the boot fits over the globe holder thingy. Had to pull most of the Tupperware off to do it though, so I hope I don't have to do it again too soon.
On the subject of light colour, I always understood that a yellowish light gives better definition and is the best colour, but we often seem to try for the whiter lights, if not bluish ones. The LED's I have are very white, but I don't think they make them or anything like them with a yellower tint. They aren't your everyday Cree star led, that's for sure.