So, I took NM’s advice, built the ICT back up and did some back-to-back testing with the Dude. If I had my time again I wouldn’t bother with the “upgrade”. The Dude looks better on paper and is better in some (but not all) situations, but overall it isn’t any more fun. However, it’s not really any less fun and you do really notice the lower weight when you have to pick it up (although, surprisingly, not when riding). Since I tend to use the fatbike for exploring and many of those rides end up with extensive sections of hike-a-bike I think I’ll keep the Dude.
So, if anyone is interested in a large blue ICT (frame or full build) let me know 🙂 I’ll probably get round to listing it in the classified section one day, but I wouldn’t hold your breath.