I installed 440s and the monotubes on my 2010 UC about a week ago, and I am very pleased. I had previous good experience with 440s on other bikes, but had never upgraded the front forks on an H-D before. I chose this option over Bitubo & Traxxion because it was less expensive and I could get everything done locally.
The ride is much more stable with very little dive during hard braking. I also get much better front end feedback (a good thing in my book). I have don't any touring with this set up yet, but most of the riding has been on local back roads, which are chip seal with good sweeping turns and lots of cattle guards.
The combination of the new frame and these suspension upgrades have made this the most stable and enjoyable H-D that I rode. I also have a Buell with Works suspension upgraded to my weight and specs. While the H-d could not possibly feel as planted or nimble as the Buell, the difference is a lot less than before the H-D upgrades. I view this as money well spent.
I obviously cannot compare my current set-up with Bitubo and Traxxions, but I am a happy camper so far
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