A Brooks saddle can give you numbness just as with any other. The comfort that most refer to with a Brooks is in the way it supports your tail once it is broken in. But in the beginning when it is new, it is fairly slippery and you can easily slide forward and off the wider supportive part, ending up on the perineum. Hence the need to tilt it up slightly - to prevent sliding forward. After awhile it gets better, and your sit bones develop the divits that tend to hold one in place. but they are still hard saddles and if you have prostate issues it might not be the saddle for you.