No. I don't plan to either. Mine are still good as new. When it is time to replace it will be OEM rubber. I think the touareg is stiff enough, handles excellent on and off road, anything more and I feel it would become uncomfortable. Bushings are made to flex. This is not a race car. Off-road, it needs to flex more, heck even on-road you need some flex not just for comfort but for handling. I would not want to put up with dry poly bushings squeaking or having to lube them up all the time. Wasted time IMO. I also think it has to do with design.
This is a good video on the differences in design.
I have dealt with them on many other cars through the years and can say that the touareg would be any different. It will be good at first but then they tend to fail quickly in my experience. Some even deform when they loose grease or get dirty. Then you have to do the job again! NO thanks!
Let us know how it goes later on down the road. Like I said at first, it's great, like new. Plus there is this sense, 'Oh I paid for these, they are special poly bushings. They are Great". 2-3,4,5 years down the road," these things are noisy, I hate them" or "dang it, I have to replace them". or you might be one that can deal with them and in that case they are for you!
