One of my clubmates does the one bike to rule them all thing on a Factor LS. He just has two sets of wheels and uses GRX 2X so it's alright for club runs too. Seems to work well for him but I guess it comes with compromises. I personally don't like 2X off road but then I like to ride in Epping treacle all winter and used to trash front derailleurs constantly so YMMV.
One of my clubmates does the one bike to rule them all thing on a Factor LS. He just has two sets of wheels and uses GRX 2X so it's alright for club runs too. Seems to work well for him but I guess it comes with compromises. I personally don't like 2X off road but then I like to ride in Epping treacle all winter and used to trash front derailleurs constantly so YMMV.