I've only used it once in my career, and at the time I was 'junior' to the other dev with the tools being used on a particular project (I was more senior/experi

I've only used it once in my career, and at the time I was 'junior' to the other dev with the tools being used on a particular project (I was more senior/experienced than him overall though and had more produce expertise). Did it for a long week (about 80 hours actually) when we were under a very tight timeline to get a product out the door - I actually thought it was extremely effective and productive - gained months worth of learning in a very short timeframe. On the other hand, no way would I want to work someplace where it was assumed you would pair with someone all day every day.