I played a few games with V1 boards when i first got to see the V2 rules.
It works fine, albeit you do have to allow for a few minor tweaks here and there.
If you and your opponent run through the boards you are using before you begin, it takes just 5 minutes to iron out any issues and work out an agreeable approach to any issues you find.
The biggest will be what you decide to do with melee/reaction abilities. Many can be tweaked to melee ones easily enough, but there are a few awkward ones you may need to think over how best to handle them for yourselves. (norse gaels challenges for example)