I know very few if any mountain bikers in my area that actually adjust seat height, if they do it would be in a class type setting. I know of situations it helps but it rarely applies to our area and type of riding. If I were to ride in a situation I needed to do it I can keep the quick release style and swap out.

On a more vain note I think the polished silver is not as nice looking and want to switch it. The seat might slip a modest amount in a long ride, like 1/8" maybe a 1/4" but my knees will start hurting when it does. Over time if I don't pay attention it may have slid over 1/2". It isn't falling down or anything like that.