Yup. Most painful hour ever spent on (and off) a bike. Good muddy fun.

Mostly I just use my mtb stripped down (no bar ends or bottle cages) or a friend's 'cross bike if i can beg/borrow one.

I use my mtb shoes (sidi dominators) and spd pedals. Give it a shot; it's a hoot and a great way to keep some fitness over the winter.