My 2ps worth:
Don’t get a Roadrat for touring. As a fast commuter they are ace, but as a tourer? Err nope. Why? Too flexy under load/loaded up for a start. Secondly, the horizontal dropouts make it a REAL pain in the ass to get the back wheel out with rack and mudguards on. Those 2 reasons alone are 2/3 of the reason I sold mine.
But for a world-touring bike, I’d go with a steel MTB frame every time. 26in wheels are tougher, parts and tyres more easy to find, the frames are stronger, they’re lower to the floor and more stable…. There’s just loads of reasons why most serious tourers take MTBs. If I was doing it, I’d use my Inbred, no question
🙂