The latest iteration of this finished fairly low (1.007 halfway through lagering) for style, but i missed the alpha temp by 5 degrees (low). So, if one attempts this, i would stress the importance to hit that alpha temp, or even raise the beta temp or shorten the beta time.
On a taste note, this is slightly less smokey than Schlenkerla's marzen, which i think makes this a MORE drinkable (versus sipping) beer by comparison.
~~ Malted barley wants to become beer. ~~