I've been using the outpost rack on a Randonee for several years now and like it a lot. One thing to keep in mind is that it's a big rack so depending on your aesthetic opinion you may or may not like it, I like it... As for bags, I solely use Ortlieb Front Rollers on it and have never had an issue mounting them. As an aside I have a set of Down under racks on a Vaya and a Tubus Tara on an AWOL. The Down Under racks are the original revision and I'm not a big fan of them, as the lower latch on my front rollers tend to pop off when I hit big bumps at speed so it's my least favorite rack. If I'm only carrying bags on the front the Tara would be my choice. If I'm carrying lots of gear I prefer the outpost.

Below is a picture of the down under racks I have and dislike...