Yes I would be very interested to know as well, maybe someone can jump in?
I believe you are correct on our assumptions.From Salsacycles.com:
"Fork measurements listed are for recommended Salsa CroMoto matching fork (80mm geo option) and RockShox Reba RL set at 100mm travel."
I understand that Salsa wants potential buyers to know that the frame will work well with both sizes, but with which fork does this measurement come from -- Is that with the 468mm A-C Cromoto fork, or is that with a 100mm Reba? These two forks have fairly different A-C lengths.
Thanks for the help.