Since this morning was the first day back to school for my Wife and three girls, I went to bed late and got up early, and was feeling the need for some more coffee in addition to the Chemex / Kone of the Panama Elida Natural I brewed up this morning for myself and three others (800 ml batch).
Instead of the smaller Kyocera CM45-CF grinder I normally use for espresso, I pulled out the Hario Mini Mill
Slim that I picked up NIB at a thrift store for $5 (couldn't believe my luck) that I normally use here at work for pour-over and dialed it in for espresso. The first shot of Panama Elida was a total gusher. Didn't even try the shot after I cleaned up the counter. I dialed the grinder in two more clicks and had a nice shot of the Panama Elida Natural (scant two days of rest from roast, taken to Full City+, darker than I planned) followed by another nice shot of previously frozen Evocation Coffee Spitfire espresso blend.
The shot of Panama Elida Natural as espresso was much nicer then the brewed Chemex batch. I had intended more of a City+ roast for this fine bean, but was roasting a rather large batch and it got away from me. The espresso shot brought out more of the sweetness so that it wasn't dominated by roasty toasty flavors.
I'd say that my preliminary testing supports the hypothesis that the Hario Mini Mill
Slim will work for espresso with the Twist. I believe that there are mods out there to make it more of a stepless grinder, but I've not modded my hand grinders in any way. If you want to try the Twist, I say go for it.