I still have a dri-ducks jacket in my gear closet that has quite a few miles on it – (~900) and though it has a couple of duct tape patches, it’s not bad considering. A dri ducks jacket is very fragile if you catch it on things and will rip quite easily, but I noticed no real issues from pack straps, so for on trail use they seem to be OK.
The fit is baggy, the hood is terrible, the zipper finicky, and the cuffs don’t close tight (at least on my skinny wrists), but for $20 it’s not too bad. The material actually feels nice against the skin and there is no DWR to wear off.
Here is a picture of me wearing a dri ducks jacket at the start of the AT after 7 inches of rain in 24 hours. (September 21 2009)

Here are my notes of the trip – “My final section this side of Damascus, VA. Day 1: Neel Gap to Justis Creek 16.9 miles Day 2: Justis Creek to Amicalola Falls State Park 22.6 miles The rain was biblical.”