It's not a deal breaker but you may have some issues. I've used my rain bike with 1x Rival on 30-32kph group rides. 11-42t is significantly wider than the 11-36t I run with a 40t chainring too, so you might not like the gaps between gears, but you can use a larger chainring to compensate. Not too many people seem to like Apex, though. Maybe look for a 2x GRX alternative? There was another poster who was looking at an Apex Cervelo and ended up doing exactly that.
Edit: of course if you have a separate road wheelset, you could also simply run a tighter cassette if you don't need the sub 1:1 low gear ratio.
Last edited by surak; 09-26-22 at 05:17 PM.