Can you slid on a Brooks
 

If the Brooks saddle leaves a butt print can you move around on them? Thanks again George

From my experience.....sliding was easy. In fact, way to easy for me. I didn't like what I thought of as slipperiness. Other users like that quality. When the saddle absorbed some sweat, it became a little less slippery.

Short answer: yes

Long version: Yes, but you won't want to because you won't need to.
I think most people squirm around because they are uncomfortable. The whole idea behind (no pun intended) leather is that it wicks moisture away from the rider that otherwise gets hot and sticky with a synthetic model, causing rash and other nasty developments. The slickness of finished leather helps to get air between the rider and the saddle. That's another reason NOT to over soften the hide. It will form to you but it should remain firm to the touch of the hand. In other words, don't try to make it a butt-sling by using 'conditioners' on a perfectly good saddle.

Fresh out of the box they are slicker than greased owl sh*t! I found it easier to wear regular denim or canvas riding shorts until the 'new' wore off the saddle...lycra riding gear was way too slick at first. But they get better with each ride, until like mentioned above, you have a 'spot' that just fits and sliding is something you used to have to do on all those other saddles...

When a Brooks saddle is nicely broken in, as all three of mine are, it has what I would call ideally "neutral" sliding characteristics, i.e., it will hold you in place, but permit you to lift slightly and to slide as desired. (I like to slide back a bit for hard braking on a descent, for example.)

I have three B-17s, and they're all comfortable and allow sliding as far as I need to slide. As another post said, they're slippery out of the box. It soon wears off, but if it bothers you, a coat of Proofhide (Brooks' leather treatment) will help you stick.
Proofhide, by the way, should be applied only once or twice a year--it's not a weekly maintenance requirement or anything like that. Grant Petersen at Rivendell has ridden Brookses for 30 years, and he says more than two applications a year shortens the life of the saddle.