It may have been the wider 35 mm G-One tires on the ALR that gave you the impression of better quality. For your purposes, a combination of racing and gravelriding, the narrower/slicker Bontrager R1 tires seem a better compromise.
A gravelbike can handle all weather conditions. Don't put it on a trainer!!!
I would use the bike for gravelriding and bikepacking. I love the multiple mount options on this bike. But my current cyclocross machine is still functional, so I don't allow myself to make a new purchase yet.
And I wait for a 1x11 drivetrain option. I wonder why Trek only offers 50/34 compacts on the Checkpoint. Can anyone start a thread on that???