Hey Mike :0) I sometimes sweep it too, only when I'm doing one section only and repeating.. but when I do the whole thing on the 6 strings, I do it with alternate picking.

There ain't specific rules for this, cuz every body can do some variations to fit into a particular solo.

Anyway, I like to start this with an upstroke.

If you want to try sweeping with this "Shreddy Kruger" , here's how I like to do it, when I'm repeating one section only.

up-pull-down-down-up (return to begining with an upstroke , so that you sweep up)