DWR failure is not a big deal. If the DWR failed your jacket is still waterproof. The jacket will however loose some or most of its breathability. To help prevent condensation open any vent, slow down to minimize heat, or setup camp early so that the condensation can dry off. Once the rain stops and the jacket starts to dry breathability will be restored to it original level.
skurka's DWR on his 2.5 layer shell failed ,,, and he got soaked from the outside ... on BOTH of his rain jackets ...
DWR failure is a serious issue if you cant renew it ... ie a hot dryer
The two other jackets were production models, and I didn't treat those -- I used them as rain gear. If I could have re-treated the jacket during the trip, I wouldn't have needed two since there was nothing structurally wrong with the jacket -- it was just that that the DWR coating had worn off and there was no hydrostatic head, so I got soaked whenever it rained. "Mom, send my other blue rain jacket."
In general I've never been impressed with rain gear, especially on a long trip. It fails, period. The Pertex fabric is no different, except its heavy face fabric tends to absorb a lot of moisture -- I think its weight skyrocketed to about double when it got wet, and then it got mildewy because it never had the opportunity to dry in some of the most prolonged wet storms.
also read ... http://andrewskurka.com/2012/breathability-its-importance-mechanisms-and-limitations/
Both treated it as a warranty issue and I have not seen any recent reports of Gortex or Event delamination.
If your worried about delimination get a jacket with a 3 layer fabric. The 3rd layer will preevent you from tearring or puncturing the PTFE when you put it on. I have not read of any 2.5 layer Gortex or Event fabric delaminating.
but the best of all is from our very own BPL SOTM rain jacket test ...
Most disturbing of all, the Spektr failed utterly in the waterproofness department, and after a modest amount of use. I noticed some significant fabric fuzzing after my testing, but thought little of it when I sent it to Alaska for BPL writer, champion wilderness racer, and notorious gear killer Luc Mehl to use. He took it on a travese of the Aniakchak crater out near the Aleutians and got “pretty much soaked” by rain leaking in under the pack straps. I was shocked to hear this, as the test jacket had, by that point, fewer than 20 days in the field. I had even cleaned the jacket before sending it north to ensure the DWR was in good shape. The only conclusion I can draw is that fabric abrasion caused laminate failure, and that Montane has some work to do on the durability of this particular form of eVent.
you get the point ... i can of course find many many many more "examples" ...