I have the Axiom Journey on a Kona Dew commuter bike, and I had a MEC rack on the touring bike I sold as I now tour on a recumbent with Axiom Odyssey rack.

I also have MEC (Serratus) panniers, and they came on and off the MEC rack really easily. They are a bit more of a challenge to get on and off the Journey because of the thicker tubing, but they should still work fine.

The Journey seems like a much beefier rack that can hold more weight than the MEC rack, though I never had any problems touring with the MEC rack.