Bought one of those ten years ago and went two-up touring on it.
Was great.
However, as a fighter.... No, thanks.
It´s a heavy (was it 260 kg?), long machine (wheelbase 1580mm....), and the steel (yes it´s steel) perimeter frame is not very nice to look at.
As you mentioned, it also rolls on 16" wheels that seriously limits your choices on tires.
The engine is torqey but has some drawbacks when you tune it compared to it´s R-version siblings.
For example it has not got the straight cut gears on the crank as the R has, and that creates som serious axial forces on the crank when flogged.
I would sure like to have one again, just for touring and taking passengers.
But as a fighter (and by fighter I mean a vehicle built for blasts, wheelies, and pure unalterated fun), nothanks :'(
Cheers
Dan