the triumph one is an LSR machine, straight line, built by a friend of mine for another guy. it's geared for around 175 or so. went out to the races one time, ran once on a shakedown to 142mph, then an oil seal inverted on the crank nose and it lost oil pressure to the front motor. the rider shut it down, and the mechanic there couldn't find the slightly misshapen seal (he was not a british bike mechanic), and it hasn't been out since. it's sitting as a display piece in a drive-in bar in new york, sadly. my friend is all kinds of frustrated that it hasn't gone back out. his build was exquisite, imo.
open primary chains mean it has to be lubed all the time. not practical for street use. plus the riding position is mostly horizontal.