I have been using rssowl portable. It currently isn't in PAF which is why i really excited about quiterss.
After having tried it out, I have a couple needs before I could switch to it 100%.
1) RSSOwl has a newspaper view where all the articles are listed in the browser view. i can hide the article list which is good. I just scroll through the articles using the direction arrows on the keyboard but it would be nice to just scroll through all the articles in the browser using the mouse wheel.
2) Google reader sync is also another option as they use this type of view.
It should be noted that RSSOwl is not portable. If I recall correctly, it uses an IE instance within itself to show everything so history, cookies, logins, etc are all stored as if you had IE open on the local PC. That's why we did not make it available.
Sometimes, the impossible can become possible, if you're awesome!
I understand the reasoning behind not going with RSSOwl. I don't login to any sites through rssowl so it doesn't bother me too much that it isn't a truly portable app. I had used greatnews in the past as well which i believe has the same problem. I switched from greatnews as it isn't supported/developed anymore.
It is just a convenience factor with having the "newspaper" view. I can quickly scroll down through all the articles in a feed.
I'm really excited that there is now a full featured rss client in PA.c. I hope this view can be added in a future release of the app.
I realized i may be barking up the wrong tree. I sent the developer of QuiteRSS the feature request so maybe at some point it may get incorporated.
I contacted the developers of quiterss. they have responded saying they also need this feature and have said it will be in an upcoming release! Woot!