Yes the pipe, Brett called it his "social crutch". He was a shy individual, although those who did not know him well would refer to his large ego. Not the case, but fame is often accompanied by distortion.
It is important to realize that Brett was very poor until about 1968. This changed with the sale of his dad's work, along with a large number of his own, to Bill Lane. Before that, "snake time" was accompanied with cheap sherry on ice, unless an "affluent" guest would arrive with Brett's favorite, Jim Beam. Sometimes I had the honor.
I mention this state of finances, because much of what is associated with Brett occurred after 1968; his fancy cars, three houses, expensive darkroom and field equipment, and numerous trips abroad.
As to his 120 film cameras, prior to receiving the Rollei outfit, he had used the TLR Mamiyaflex, mostly for portraits. The Rollei, however, had many advantages as noted earlier, and was responsible for much of the work for which Brett is famous. Obviously, work that would not have been possible with the large camera. With his finances in a healthy state, he was able to add other roll film cameras, including a Pentax, and Mamiya SLR. He usually had the 5x7 Linhof with him on trips after he was unable to use the 8x10.
The first significant health problem to beset Brett was in 1979. What was diagnosed as a spider bite, developed into a massive infection and loss of muscle in his arm. I visited him in the hospital and he was in a predictable low state. However, he had something he wanted to show me that afternoon that brought a smile to his face; the architectural drawings of the house that he was going to build in Waikoloa. The house was completed in 1980. Brett was released from the hospital two days after my visit, but his big camera days were pretty much over.
As for me, I gave up the pipe fifteen years ago. Brett introduced me to the vice at an early age. Every so often Brett would give up his pipes, with a great ceremony of burning the briar in his fireplace; "Merg, I'm quitting for good", he would announce, much to my disappointment, because we liked to share tobacco. However, the cessation was short, and by our next visit he had been to Walgreen's to pick up a couple of cheap pipes. He would break in a new pipe by filling it, lighting it, and holding it out the truck window as he sped down the highway. This was a ritual that I witnessed many times over the years.