I just don't know why you would need to do it as a standard practice. Is it harmful? Probably not. I just think it's unnecessary with the exception of a stalled fermentation or perhaps a super flocculant yeast.
I use 1968 pretty regularly, which flocs like mad, and haven't found the need to keep the yeast roused. I think you're well served to make sure you have a healthy pitch and let it do it's thing.