Soz to jump in but mines an aftermarket armrest but never really had any probs when changing gear. Are they different?? Is mine a wannabe V-Dub armrest?? Pulling handbrake up is a little awkward but never lift it up because of it.
Ive owned mine for well over two years, and Im looking forward to trying this after work today now you have mentioned it.
Ive had it up (ooer) for two years plus, making it easier to change gear (I find it does get in the way a little) but very hard to get the map out of the back seat pocket or fetch anything from the back of the car.
I did however find the third sunvisor under the mirror within a couple of weeks. 
A forum community dedicated to Volkswagen Mark 4 owners and enthusiasts in the UK. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more for the Golf, Bora, Jetta, Touran, and Scirocco!