I don't remember any urgency just after my takedown, I remember being advised to resist the urge to go; so to stretch the pouch and to create longer periods between BM's, although I don't know whether I actually did this, everything kind of just occurred naturally.
Even now, nearly two years since takedown, my sleep is very rarely disturbed.
I believe urgency can be a sign of Pouchitis, which I've never experienced and considering I read about it often on this forum, I know very little about.