"it's size"
"tall wagon"
"truck"
overall I view it more like an audi all road - it is within a few cm in length and width of the giulia, so hardly larger. yes, taller, and a chunk of that is ground clearance, that some might reduce to giulia qv levels.
so the body is a a few inches taller, and for that you get a (opinion here) better (road) driving position, improved front visibility, the "door in the wrong place" issue is lessened, back seat foot room improved, more cargo area, and in the US a tow rating. Curt is making a nice class II for it (on stelvio forum). rear visibility on both is bad so they both have cameras.
issues - you are stuck with AWD all of the time, trade off is better acceleration up to legal speed limits, and on the QV you give up 20mph in top speed, which likely isn't much of an issue for most.