I (and I'm sure many others) have changed tyres numerous times on the side of the trail.
the rim is slightly unusual having a sort of ledge that the bead sits on with a secondary smaller bump on it that in normality would be behind the bead.
don't let that worry you though, changing the tyre is the same process but is a little tougher to do especially if the tyres been on for a while or its cold
I always use motion pro alloy levers and whilst I sometimes have to work the tyre for a bit it's always come off, Heidanaus, pirellis, Mefos, TKC's and Michelin Deserts
seating some of them is a pain, even with a garage compressor, don't sweat it though, max out the compressor (I often use an 8" hand pump) and ride for 2-3 minutes, it will be a lumpy ride but the tyre will warm and seat itself