Didnt we learn last year that Schwarber doesnt perform well in a pressure position at the top of the order? He's a 5,6,7 hitter
FWIW Schwarber hitting out of the 2 hole is a career .223/.342/.485 hitter over 325 PAs though I would caution his babip there is .239. Batting average is fairly garbage but the only spot he's hit better in terms of OPS is 5th where he has hit .273/.368/.667 over 114 PAs with a much higher .296 babip. He's got a decent average/obp out of the 6 hole as well though it's a pretty small 52 PA sample at .292/.346/.479. In terms of what I think likely matters for him, his k rate in the 2 hole is 27.7%, its 29.8% in the 5 hole and 40.4% in the 6 hole. In terms of walk rate, he's at 13.8% in the 2 hole and 11.4% in the 5 hole.
So if one were inclined you could make the case that he's a slugger in the 5 hole and more of a complete hitter in the 2 hole. If for instance you add 47 points in difference to his batting average to compensate for the BABIP difference he would be looking at something like a .270/.389/.532 line. More over the 2 hole by far is the position in the order where Maddon has played him the most. He has 3x the number of PAs there compared to the 5 hole and 7x the number of PAs in the 6 hole.
If you disagree with Maddon that's fine but I think it's fairly likely we will see him in the 2 hole. Also, I would suggest that from a statistical standpoint if he can hit for average you want him there anyways because he walks more than any other cubs hitter excluding Zobrist. Since 2015 top cubs are Zobrist at 13.3%, Fowler at 13.1%, Coghlan at 12.7%, Schwarber at 12.6%, Montero at 12.3%, Bryant at 12.3% and RIzzo at 11.8%.