i wish i held off… maybe give it until 10.2. there’s not exactly anything that you’re missing out on as far as features anyway

yeah, it’ll want a GPS track. the primary ways it spits out a vo2max estimate is by looking at your heart-rate and pace, so it needs distance information. it also wants to know the elevation data so it knows only to spit out an estimate if the run was done on relatively flat ground (it’s an estimate because the watch isn’t actually capable of measuring vo2max since it can’t measure your oxygen consumption).

the two main things for me would be the battery life and multi-band GPS, though really, Apple has no excuse for those things not being far better than they are on the Series 9 currently.