Would also be interested in hearing how to use a traditional stem/bar combo to test out stem length.
And i just cant decide whether i should go for an ER:One or wait for something with a higher stack (like Tavelo Arden) at the moment i got a canyon ultimate in S (390 Reach, 539 stack, 90mm stem) and i would like to have more reach and more stack…so i would need to have maybe some spacer plus riser cockpit on the Er:One due to its Stack being so low :/