I have used Renaissance there tough and mould and shape well with the right solvents, solvents are important - I use Micro Sol and Micro Set from microscale industries- Even very hot water can help soften and shape the decal. The renaissance decals are not fragile have a look at some of my experimantal pics...... on parts of a Ford Focus Rally car
JUST THE FIRST 4 PICTURES PLEASE don't scroll down after that!!
http://www.angelfire.com/de2/darren/gp4.html