only Bad News i'm afraid
:The Dust Minis are much bigger than the SOTR Minis,i wouldn't mix them,although you can Mix Dust Power Armour Guys with SOTR Power Armour,Dust Grim Reapers fit well with SOTR A.P.E Suits etc
Tomorrows War is an epic fail,apart from the 4 Scenarios in the Book which require lots of Troops (minimum 9 APCs for the last Mission),TW is completely unplayable,just an example: you have lots of Pictures of Walkers all type of them small,medium,large Walkers whatever,but there are no Rules in the Book how they act on the Battlefield,NO Nothing about Movement Range,Armory,Point Cost or anything that let you actually field a Mech/Walker in TW